Panchang in Ipameri, Goiás, Brazil Sun 25 Nov 2018

The Sankashti fast is broken at moonrise. Chaturthi runs from 20:36 on Sun 25 Nov to 18:05 on Mon 26 Nov, so it holds moonrise only on Sun 25 Nov, at 22:08. No text giving Sankashti Chaturthi’s time was found; moonrise is Tithika’s convention.

Sankashti Chaturthi: every date in Ipameri

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, 06:28 here. Dwitiya ended at 23:07 Sat, before it. Tritiya ends at 20:36, when the lead reaches 216°. The lead passed 180° at the full moon of 23 Nov, so the Moon is waning: Krishna paksha.

The night of Sat 24 Nov ran from sunset 19:31 Sat to sunrise 06:28, 10 h 57 m. Cut into 15 muhurtas of 43 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:28 to 19:31, splits into 8 choghadiyas of 1 h 37 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:31 to 06:28 Mon, splits into 8 choghadiyas of 1 h 22 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′. Ardra spans 66°40′–80°00′; the Moon entered its pada 1 at 66°40′. It leaves at 04:07 Mon, for Punarvasu.

Add the Sun's and the Moon's places among the stars: 218.9° + 67° = 285.9°. The sum, cut into 27 parts of 13°20′, gives the yoga: 280°00′–293°20′ is the 22nd, Sadhya. It ends at 18:03, then Shubha.

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 09:52, when the lead reaches 210°; Vishti until 20:36.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:28 to 06:28 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: Tula gives Kartika. The Sun enters Vrishchika on 16 Nov, inside the month. The next new moon, 7 Dec, finds it in Vrishchika and begins Margashirsha.

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 7 Dec, with the Sun in Vrishchika, begins Margashirsha. Until then this Krishna paksha reads Margashirsha here, and Kartika in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 17 Mar 2018, 10:11 Sat. Since then the Sun has moved 246.1° round the stars. Vikram Samvat numbers that year 2075; Shaka Samvat numbers it 1940.