Sankashti Chaturthi 2028

Every Saṅkaṣṭī Caturthī of 2028: the day kept, its moonrise, and when the Chaturthī begins and ends.

12 Sankashti Chaturthis in Delhi

The next is on Saturday, 15 January, moonrise 21:31. 2 fall on a Tuesday, popularly Aṅgārakī.

Every Sankashti Chaturthi of 2028 in Delhi

Delhi time. Each carries both month names.
MonthChaturthiMoonriseFast day
January Pausha (amanta) / Magha (purnimanta), Krishna Chaturthi 14 Jan, 23:17 – 15 Jan, 20:10 Sakat Chauth 21:31 Sat 15 Jan
February Magha (amanta) / Phalguna (purnimanta), Krishna Chaturthi 13 Feb, 09:40 – 14 Feb, 06:42 21:23 Sun 13 Feb
March Phalguna (amanta) / Chaitra (purnimanta), Krishna Chaturthi 13 Mar, 20:39 – 14 Mar, 18:23 21:15 Mon 13 Mar
April Chaitra (amanta) / Vaishakha (purnimanta), Krishna Chaturthi 12 Apr, 08:36 – 13 Apr, 07:29 22:11 Wed 12 Apr
May Vaishakha (amanta) / Jyeshtha (purnimanta), Krishna Chaturthi 11 May, 21:52 – 12 May, 22:08 22:42 Fri 12 May
June Jyeshtha (amanta) / Ashadha (purnimanta), Krishna Chaturthi 10 Jun, 12:32 – 11 Jun, 14:02 21:59 Sat 10 Jun
July Ashadha (amanta) / Shravana (purnimanta), Krishna Chaturthi 10 Jul, 04:18 – 11 Jul, 06:34 21:35 Mon 10 Jul
August Shravana (amanta) / Bhadrapada (purnimanta), Krishna Chaturthi 8 Aug, 20:30 – 9 Aug, 22:56 Tuesday, popularly Aṅgārakī 20:34 Tue 8 AugOthers: Wed 9 Aug
September Bhadrapada (amanta) / Ashwin (purnimanta), Krishna Chaturthi 7 Sep, 12:26 – 8 Sep, 14:30 20:05 Thu 7 Sep
October Ashwin (amanta) / Kartika (purnimanta), Krishna Chaturthi 7 Oct, 03:35 – 8 Oct, 04:51 20:01 Sat 7 Oct
November Kartika (amanta) / Margashirsha (purnimanta), Krishna Chaturthi 5 Nov, 17:33 – 6 Nov, 17:43 19:39 Sun 5 Nov
December Margashirsha (amanta) / Pausha (purnimanta), Krishna Chaturthi 5 Dec, 06:04 – 6 Dec, 04:59 Tuesday, popularly Aṅgārakī 20:35 Tue 5 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

Tuesday, 8 August

Shravana (amanta) / Bhadrapada (purnimanta), Krishna Chaturthi · Tuesday, popularly Aṅgārakī

Chaturthi from Tue 8 Aug, 20:30 to Wed 9 Aug, 22:56, Delhi time.

Kept on Tuesday, 8 August: the Chaturthī is current at the moonrise on both Tuesday and Wednesday, so some keep the earlier day, Tuesday, joined with Tṛtīyā, and others the later, Wednesday, 9 August. Nirṇaya-sindhu p. 47

Questions

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

When are the Sankashti Chaturthis in 2028?

In Delhi, 12 Sankashti Chaturthis fall in 2028. 2 fall on a Tuesday (popularly Aṅgārakī): 8 August, 5 December. 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