Sankashti Chaturthi 2027

Every Saṅkaṣṭī Caturthī of 2027: the day kept, its moonrise, and when the Chaturthī begins and ends.

12 Sankashti Chaturthis in Delhi

The next is on Monday, 25 January, moonrise 21:12. One falls on a Tuesday, popularly Aṅgārakī.

Every Sankashti Chaturthi of 2027 in Delhi

Delhi time. Each carries both month names.
MonthChaturthiMoonriseFast day
January Pausha (amanta) / Magha (purnimanta), Krishna Chaturthi 25 Jan, 08:10 – 26 Jan, 06:00 Sakat Chauth 21:12 Mon 25 Jan
February Magha (amanta) / Phalguna (purnimanta), Krishna Chaturthi 23 Feb, 21:49 – 24 Feb, 20:40 21:59 Wed 24 Feb
March Phalguna (amanta) / Chaitra (purnimanta), Krishna Chaturthi 25 Mar, 12:38 – 26 Mar, 12:43 21:44 Thu 25 Mar
April Chaitra (amanta) / Vaishakha (purnimanta), Krishna Chaturthi 24 Apr, 04:21 – 25 Apr, 05:42 22:27 Sat 24 Apr
May Vaishakha (amanta) / Jyeshtha (purnimanta), Krishna Chaturthi 23 May, 20:42 – 24 May, 22:59 21:59 Sun 23 MayOthers: Mon 24 May
June Jyeshtha (amanta) / Ashadha (purnimanta), Krishna Chaturthi 22 Jun, 13:07 – 23 Jun, 15:43 Tuesday, popularly Aṅgārakī 21:52 Tue 22 Jun
July Ashadha (amanta) / Shravana (purnimanta), Krishna Chaturthi 22 Jul, 04:47 – 23 Jul, 06:56 21:23 Thu 22 Jul
August Shravana (amanta) / Bhadrapada (purnimanta), Krishna Chaturthi 20 Aug, 18:53 – 21 Aug, 20:05 20:23 Fri 20 Aug
September Bhadrapada (amanta) / Ashwin (purnimanta), Krishna Chaturthi 19 Sep, 07:09 – 20 Sep, 07:09 20:03 Sun 19 Sep
October Ashwin (amanta) / Kartika (purnimanta), Krishna Chaturthi 18 Oct, 17:52 – 19 Oct, 16:42 19:30 Mon 18 Oct
November Kartika (amanta) / Margashirsha (purnimanta), Krishna Chaturthi 17 Nov, 03:42 – 18 Nov, 01:35 20:21 Wed 17 Nov
December Margashirsha (amanta) / Pausha (purnimanta), Krishna Chaturthi 16 Dec, 13:22 – 17 Dec, 10:34 20:25 Thu 16 Dec

When the Chaturthi meets both moonrises, or neither

At both moonrises, some take the earlier day, joined with Tṛtīyā, and others the later day, which covers midday; these pages keep the earlier day and note the later. At neither, the later day. Nirṇaya-sindhu p. 47

Sunday, 23 May

Vaishakha (amanta) / Jyeshtha (purnimanta), Krishna Chaturthi

Chaturthi from Sun 23 May, 20:42 to Mon 24 May, 22:59, Delhi time.

Kept on Sunday, 23 May: the Chaturthī is current at the moonrise on both Sunday and Monday, so some keep the earlier day, Sunday, joined with Tṛtīyā, and others the later, Monday, 24 May. Nirṇaya-sindhu p. 47

Questions

Rules from the Nirṇaya-sindhu and the Vīramitrodaya, with the page for each.

When are the Sankashti Chaturthis in 2027?

In Delhi, 12 Sankashti Chaturthis fall in 2027. One falls on a Tuesday (popularly Aṅgārakī): 22 June. The table lists every date with its moonrise.

What is Sankashti Chaturthi?

A vow to Gaṇeśa on the Chaturthī, the fourth tithi, of the dark half of the lunar month, kept on the day the Chaturthī is current at moonrise. The dark half is common practice; the texts read do not state the fortnight. Nirṇaya-sindhu p. 47; Vīramitrodaya p. 38

What time is moonrise on Sankashti in my city?

Each city has its own moonrise; choose yours above. Moonrise here is the visible rise, the Moon’s upper limb with refraction; the texts do not say, so this is our convention.

Why does the date differ between cities?

Each date is worked out for the city’s own moonrise. The Chaturthī begins and ends at the same moment everywhere, but whether it is current at a city’s moonrise depends on the city, so cities far apart can keep different days.

What is Angaraki Sankashti?

A Saṅkaṣṭī Caturthī that falls on a Tuesday. Śātātapa says a Caturthī on a Tuesday “gives fruit like the equinox”. The name Aṅgārakī is popular; the texts read do not use it. Nirṇaya-sindhu p. 73

How the days are found

Read the methodology
The day kept
The dark-fortnight Chaturthī current at moonrise. When it is current at both moonrises, the earlier day, joined with Tṛtīyā, is kept, with the later day noted, and at neither, the later day.
Moonrise
The visible rise: the Moon’s upper limb, with refraction, for the chosen city. The texts do not say; this is our convention.
The fortnight
Krishna paksha, by common practice. The texts read do not state the fortnight.
Sources
Nirṇaya-sindhu, 1898, pp. 47, 73; Vīramitrodaya, Samaya-prakāśa, p. 38.

Moonrise of the Moon’s upper limb, with refraction · Lahiri ayanamsa for month names · each city’s own time · Swiss Ephemeris · Method