Durga Puja 2027 (Bengal)

Durga Puja in 2027 by the Bengal rule of Raghunandana’s Tithi-tattva: the bodhana, the leaf entry, the Mahāṣṭamī, the Sandhi Puja, the Mahānavamī and the immersion, with their times, for your city.

City

Bengal (Raghunandana, Tithi-tattva)

Durga Puja in Kolkata

6 to 10 October

From the leaf entry on Wednesday, 6 October to the immersion on Sunday, 10 October; the bodhana is on Tuesday, 5 October.

MahashtamiThu 7 Oct

MahanavamiSat 9 Oct

Sandhi PujaFri 8 Oct, 06:04 – 06:52

Days reckoned at Kolkata, where this Bengal rule is kept; times in your local clock. Tithi-tattva pp. 73⁠–⁠92

The schedule, act by act

Bengal (Raghunandana, Tithi-tattva)

Days reckoned at Kolkata, where this Bengal rule is kept; times in your local clock.

The bright fortnight of the pūjā follows Mahālaya Amāvasyā, the last day of the Mahālaya fortnight, which falls on Wednesday, 29 September in Kolkata. Mahalaya Amavasya

Act	Day	Time	Why
Bodhana	Tue 5 Oct	17:19 – 18:31	The Ṣaṣṭhī holds the evening before the leaf entry, so the goddess is awakened and invited together that evening, on Tuesday. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	05:30 – 11:24	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 05:40 – 05:55, 06:24 – 08:53, 09:23 – 09:39, 10:09 – 10:24, 10:54 – 11:08.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	05:31 – 11:23	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 05:31 – 05:39, 06:08 – 08:37, 09:08 – 09:23, 09:53 – 10:08, 10:38 – 10:53, 11:21 – 11:23. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:01 – 19:13	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:01 – 19:13 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:17 – 12:09	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:27 – 06:43, 07:13 – 09:48, 10:20 – 10:35, 11:06 – 11:21, 11:51 – 12:06.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:19 – 12:07	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:19 – 06:27, 06:57 – 09:33, 10:04 – 10:19, 10:50 – 11:05, 11:35 – 11:50. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:22 – 19:34	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:22 – 19:34 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:31 – 12:26	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:40 – 06:54, 07:23 – 09:49, 10:19 – 10:34, 11:04 – 11:19, 11:48 – 12:03.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By Mumbai’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:32 – 12:25	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:32 – 06:39, 07:07 – 09:33, 10:03 – 10:18, 10:48 – 11:03, 11:33 – 11:47, 12:16 – 12:25. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	17:55 – 19:07	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 17:55 – 19:07 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	05:59 – 11:57	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:08 – 06:22, 06:49 – 09:10, 09:40 – 09:54, 10:24 – 10:38, 11:08 – 11:22, 11:51 – 11:57.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	05:59 – 11:55	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 05:59 – 06:06, 06:33 – 08:55, 09:24 – 09:38, 10:08 – 10:23, 10:52 – 11:07, 11:35 – 11:50. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:06 – 19:18	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:06 – 19:18 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:10 – 12:07	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:19 – 06:32, 07:00 – 09:21, 09:50 – 10:05, 10:34 – 10:49, 11:18 – 11:33, 12:02 – 12:07.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:10 – 12:06	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:10 – 06:17, 06:44 – 09:05, 09:34 – 09:49, 10:18 – 10:33, 11:02 – 11:17, 11:46 – 12:00. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:01 – 19:13	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:01 – 19:13 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:08 – 12:04	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:17 – 06:31, 06:59 – 09:24, 09:54 – 10:09, 10:39 – 10:53, 11:23 – 11:38.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:08 – 12:03	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:08 – 06:16, 06:44 – 09:08, 09:38 – 09:53, 10:23 – 10:38, 11:07 – 11:22, 11:51 – 12:03. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:22 – 19:34	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:22 – 19:34 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:33 – 12:27	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:43 – 06:58, 07:27 – 09:57, 10:27 – 10:42, 11:13 – 11:28, 11:58 – 12:12.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By Ahmedabad’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:35 – 12:26	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:35 – 06:42, 07:11 – 09:41, 10:11 – 10:27, 10:57 – 11:12, 11:42 – 11:56, 12:25 – 12:26. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:19 – 19:31	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:19 – 19:31 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:26 – 12:22	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:36 – 06:50, 07:19 – 09:44, 10:14 – 10:29, 10:59 – 11:14, 11:43 – 11:58.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:27 – 12:21	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:27 – 06:35, 07:03 – 09:29, 09:58 – 10:13, 10:43 – 10:58, 11:28 – 11:42, 12:11 – 12:21. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:08 – 19:20	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:08 – 19:20 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:22 – 12:14	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:32 – 06:47, 07:17 – 09:51, 10:22 – 10:37, 11:08 – 11:23, 11:53 – 12:08.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:24 – 12:13	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:24 – 06:32, 07:02 – 09:35, 10:06 – 10:22, 10:52 – 11:07, 11:37 – 11:52. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	17:47 – 18:59	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 17:47 – 18:59 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:01 – 11:54	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:12 – 06:27, 06:57 – 09:30, 10:01 – 10:17, 10:47 – 11:02, 11:32 – 11:47.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	06:04 – 06:52	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:03 – 11:53	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:03 – 06:11, 06:41 – 09:14, 09:45 – 10:01, 10:32 – 10:47, 11:17 – 11:31. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:28 – 19:40	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:28 – 19:40 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	07:10 – 12:48	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 07:22 – 07:41, 08:19 – 11:28, 12:05 – 12:23.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	01:34 – 02:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By London’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	07:16 – 12:47	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 07:16 – 07:25, 08:03 – 11:13, 11:49 – 12:07, 12:42 – 12:47.By London’s own sunrise the Tithi-tattva’s rule would give Saturday, 9 October. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:30 – 19:42	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:30 – 19:42 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.By New York City’s own sunrise the Tithi-tattva’s rule would give Monday, 4 October.
Navapatrika entry	Wed 6 Oct	06:58 – 12:43	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 07:08 – 07:25, 07:58 – 10:48, 11:21 – 11:38, 12:10 – 12:26.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Thu 7 Oct	20:34 – 21:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Thursday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Thursday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By New York City’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	07:02 – 12:42	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is not current in that forenoon; it does not move the day.A movable lagna or navāṃśa is wanted for it (p. 89): 07:02 – 07:09, 07:43 – 10:32, 11:06 – 11:22, 11:55 – 12:10, 12:41 – 12:42.By New York City’s own sunrise the Tithi-tattva’s rule would give Saturday, 9 October. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:50 – 20:02	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:50 – 20:02 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.By Toronto’s own sunrise the Tithi-tattva’s rule would give Monday, 4 October.
Navapatrika entry	Wed 6 Oct	07:22 – 13:05	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 07:32 – 07:49, 08:24 – 11:18, 11:52 – 12:09, 12:42 – 12:58.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Thu 7 Oct	20:34 – 21:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Thursday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Thursday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By Toronto’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	07:26 – 13:04	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is not current in that forenoon; it does not move the day.A movable lagna or navāṃśa is wanted for it (p. 89): 07:26 – 07:33, 08:08 – 11:02, 11:36 – 11:53, 12:26 – 12:42.By Toronto’s own sunrise the Tithi-tattva’s rule would give Saturday, 9 October. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:59 – 20:11	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:59 – 20:11 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:27 – 12:43	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:35 – 06:44, 07:02 – 08:43, 09:07 – 09:19, 09:44 – 09:57, 10:25 – 10:39, 11:08 – 11:23, 11:54 – 12:09, 12:41 – 12:43.By Sydney’s own sunrise the Tithi-tattva’s rule would give Thursday, 7 October.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi.By Sydney’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	11:34 – 12:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:22 – 12:42	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:22 – 06:28, 06:46 – 08:27, 08:51 – 09:03, 09:28 – 09:42, 10:09 – 10:23, 10:52 – 11:07, 11:38 – 11:53, 12:25 – 12:42. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on the same day, Sunday. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:00 – 19:12	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:00 – 19:12 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:13 – 12:06	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:23 – 06:38, 07:08 – 09:39, 10:10 – 10:25, 10:56 – 11:11, 11:41 – 11:55.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	04:34 – 05:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 By Dubai’s own sunrise the Tithi-tattva’s rule would give Friday, 8 October. The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:15 – 12:05	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:15 – 06:22, 06:52 – 09:24, 09:54 – 10:10, 10:40 – 10:55, 11:25 – 11:40. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on Saturday, 9 October: it is decided by the Daśamī in the afternoon, while the immersion waits for the Daśamī at Kolkata’s sunrise, Sunday’s. Dussehra 2027

Act	Day	Time	Why
Bodhana	Tue 5 Oct	18:55 – 20:07	The goddess is awakened and invited together on the evening of Tuesday, 5 October, 18:55 – 20:07 local time, the evening Kolkata keeps for the bodhana. Tithi-tattva p. 75 The evening twilight is taken as three ghaṭīs after sunset, our reading.The bodhana may also be held on the dark Navamī of Āśvina, in the forenoon, ideally with Ārdrā.
Navapatrika entry	Wed 6 Oct	06:50 – 12:52	The Saptamī is current at Wednesday’s sunrise in Kolkata, so the nine leaves enter that day, in the forenoon, never at night. Tithi-tattva pp. 76⁠–⁠77 A movable lagna or navāṃśa is wanted for it (p. 89): 06:59 – 07:12, 07:37 – 09:49, 10:17 – 10:31, 11:00 – 11:14, 11:43 – 11:57, 12:26 – 12:41.
Mahashtami	Thu 7 Oct	–	In Kolkata the Aṣṭamī holds the sunrise on both Thursday and Friday, so the Mahāṣṭamī pūjā and fast are on the complete first day, Thursday. Tithi-tattva p. 88 The fast is kept on the pūjā day, not on the day of the sandhi. The Nirṇaya-sindhu and the Dharmasindhu keep the Durgāṣṭamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 262⁠–⁠264; Dharmasindhu p. 69 Navratri 2027
Sandhi Puja	Fri 8 Oct	08:34 – 09:22	The last daṇḍa of the Aṣṭamī and the first of the Navamī: the 48 minutes at the junction, on Friday. Tithi-tattva p. 86 Its bali is given on the Navamī.
Mahanavami	Sat 9 Oct	–	The Navamī is current at Saturday’s sunrise in Kolkata, after the sandhi on Friday, so the Mahānavamī pūjā is on Saturday. Tithi-tattva p. 88 The Nirṇaya-sindhu and the Dharmasindhu keep the Mahānavamī on Friday, 8 October at Kolkata. Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69 Navratri 2027
Immersion	Sun 10 Oct	06:49 – 12:51	The Daśamī is current at Sunday’s sunrise in Kolkata, so the immersion is on Sunday, in the forenoon, never at night. Tithi-tattva pp. 86⁠–⁠87 Śravaṇa, which the text wants, is current in that forenoon.A movable lagna or navāṃśa is wanted for it (p. 89): 06:49 – 06:56, 07:21 – 09:33, 10:01 – 10:15, 10:44 – 10:58, 11:27 – 11:42, 12:11 – 12:25. Vijayādaśamī, the afternoon rite the Dussehra page follows, falls on the same day, Sunday. Dussehra 2027

How the days are chosen

Every act, from the leaf entry to the immersion, is held on the tithi current at sunrise, even for a muhūrta, which is how the Tithi-tattva reads its ghaṭikā. The worship usually takes three days, and two or four when a tithi is lost or gained. Tithi-tattva pp. 87⁠–⁠89

The pūjā’s season runs from the dark Navamī of Āśvina to the bright Daśamī. The Sun in Kanyā adds merit and is not a condition. Tithi-tattva p. 73

Other years: Durga Puja 2026, Durga Puja 2028, Durga Puja 2029; all Durga Puja dates.

Questions

From Raghunandana’s Tithi-tattva, with the Nirṇaya-sindhu and the Dharmasindhu where they differ.

When is Durga Puja 2027?

By Raghunandana’s Tithi-tattva, with the days reckoned at Kolkata for every city: from the leaf entry on Wednesday, 6 October to the immersion on Sunday, 10 October. The Mahāṣṭamī is on Thursday, 7 October, the Sandhi Puja from 06:04 to 06:52 Kolkata time on Friday, and the Mahānavamī on Saturday, 9 October. The bodhana is on Tuesday, 5 October. Tithi-tattva pp. 87⁠–⁠89

Why can Maha Navami differ between calendars?

The Tithi-tattva keeps the Mahānavamī on the day after the sandhi, on the Navamī current at sunrise. The Nirṇaya-sindhu and the Dharmasindhu take the Navamī of the Aṣṭamī day when it covers three muhūrtas before that day’s sunset, and otherwise the next day, so in many years they keep it a day earlier. In 2027, in Kolkata, the Tithi-tattva gives Saturday, 9 October and the other two give Friday, 8 October. Tithi-tattva p. 88; Nirṇaya-sindhu pp. 272⁠–⁠273; Dharmasindhu p. 69

What time is Sandhi Puja?

In Kolkata, from 06:04 to 06:52 on Friday, 8 October: the last daṇḍa of the Aṣṭamī and the first of the Navamī, 48 minutes at the junction of the two tithis. Tithi-tattva p. 86

When is the immersion on Dashami?

In Kolkata, on Sunday, 10 October, in the forenoon, from 05:31 to 11:23: on the Daśamī current at sunrise, never at night. When the Daśamī lasts under a muhūrta after sunrise, the Aparājitā pūjā and the immersion move to the day before. Tithi-tattva pp. 86⁠–⁠89

Is Durga Puja the same as Navratri?

It falls in the same bright fortnight of Āśvina as Navratri, on its sixth to tenth days. Bengal’s schedule follows Raghunandana’s Tithi-tattva, and the Navratri pages follow the Nirṇaya-sindhu and the Dharmasindhu, so a day can differ, the Mahānavamī most often. Navratri 2027

Is the date different in the US or UK?

No. The days are reckoned at Kolkata, where this Bengal rule is kept, for every city, and the times are in your local clock. Where a city’s own sunrise would give another day for an act, the schedule says so. Tithi-tattva pp. 87⁠–⁠89

How the days are found

Read the methodology

The rule: Every act on the tithi current at sunrise for at least a muhūrta (Tithi-tattva pp. 87⁠–⁠89); a tithi holding no sunrise gives the day it falls on (our reading of p. 89).
Bodhana: The Ṣaṣṭhī’s evening twilight, three ghaṭīs after sunset (our reading), with the two-day rules of p. 75; the āmantraṇa on the evening before the leaf entry (p. 76).
Forenoon: The leaf entry and the immersion in the forenoon, sunrise to midday (our reading), never at night (pp. 76⁠–⁠77, 86⁠–⁠87). The movable lagna or navāṃśa the text wants (p. 89) is listed beside them.
Sandhi Puja: The last daṇḍa of the Aṣṭamī and the first of the Navamī, 48 minutes at the junction (p. 86).
Mahanavami: The day after the sandhi, on the sunrise Navamī (p. 88). The Nirṇaya-sindhu’s and the Dharmasindhu’s day is shown beside it where it differs (NS pp. 272⁠–⁠273; DS p. 69).
One set of days: Kolkata’s days for every city, where this Bengal rule is kept. Where the city’s own sunrise would give another day, the schedule notes it.
Sunrise and sunset: At Kolkata for the days, at the centre of the Sun’s disc, with refraction. The forenoon and evening windows are the chosen city’s own on those days.

Days at Kolkata · sunrise and sunset at the centre of the Sun’s disc, with refraction · Lahiri ayanamsa · times in each city’s own clock · Swiss Ephemeris · Method