Panchang in Codcod, Western Visayas, Philippines Sun 8 Oct 2017

The Karwa Chauth fast is broken at moonrise. Chaturthi runs from 19:28 on Sun 8 Oct to 16:46 on Mon 9 Oct, so it holds moonrise only on Sun 8 Oct, at 19:50.

Karwa Chauth: every date in Codcod

The Sankashti fast is broken at moonrise. Chaturthi runs from 19:28 on Sun 8 Oct to 16:46 on Mon 9 Oct, so it holds moonrise only on Sun 8 Oct, at 19:50. No text giving Sankashti Chaturthi’s time was found; moonrise is Tithika’s convention.

Sankashti Chaturthi: every date in Codcod

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 204°–216° is the 18th, Krishna Tritiya. A day takes the tithi in force at its sunrise, 05:35 here. Dwitiya ended at 22:06 Sat, before it. Tritiya ends at 19:28, when the lead reaches 216°. The lead passed 180° at the full moon of 6 Oct, so the Moon is waning: Krishna paksha.

The night of Sat 7 Oct ran from sunset 17:34 Sat to sunrise 05:35, 12 h 1 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:35 to 17:33, splits into 8 choghadiyas of 1 h 29 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:33 to 05:35 Mon, splits into 8 choghadiyas of 1 h 30 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Bharani spans 13°20′–26°40′; the Moon entered its pada 2 at 16°40′. It leaves at 18:28, for Krittika.

Add the Sun's and the Moon's places among the stars: 170.7° + 18.9° = 189.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 186°40′–200°00′ is the 15th, Vajra. It ends at 21:43, then Siddhi.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Tritiya is Vanija and the second Vishti. Vanija runs until 08:48, when the lead reaches 210°; Vishti until 19:28.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:35 to 05:35 Mon, so the hours after midnight still belong to Raviwara.

An amanta month runs from new moon to new moon and takes its name from the rashi the Sun is in at the new moon that begins it: Kanya gives Ashwina. The Sun enters Tula on 17 Oct, inside the month. The next new moon, 20 Oct, finds it in Tula and begins Kartika.

A purnimanta month runs from full moon to full moon, so its waning half comes first. It shares its name with the amanta month that its second half falls in: the new moon of 20 Oct, with the Sun in Tula, begins Kartika. Until then this Krishna paksha reads Kartika here, and Ashwina in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 28 Mar 2017, 10:57 Tue. Since then the Sun has moved 187.2° round the stars. Vikram Samvat numbers that year 2074; Shaka Samvat numbers it 1939.