Panchang in Ipameri, Goiás, Brazil Sun 28 Apr 2013

The Sankashti fast is broken at moonrise. Chaturthi runs from 07:45 on Sun 28 Apr to 04:41 on Mon 29 Apr, so it holds moonrise only on Sun 28 Apr, at 20:45. 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, 06:25 here. Dwitiya ended at 10:54 Sat, before it. Tritiya ends at 07:45, when the lead reaches 216°. The lead passed 180° at the full moon of 25 Apr, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Chaturthi began at 07:45 and ended at 04:41 Mon, between the sunrises of 06:25 and 06:25 Mon. Sunday reads Tritiya and Monday reads Panchami: Chaturthi is a kshaya tithi here.

The night of Sat 27 Apr ran from sunset 17:55 Sat to sunrise 06:25, 12 h 30 m. Cut into 15 muhurtas of 50 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:25 to 17:55, splits into 8 choghadiyas of 1 h 26 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:55 to 06:25 Mon, splits into 8 choghadiyas of 1 h 33 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′. Jyeshtha spans 226°40′–240°00′; the Moon entered its pada 1 at 226°40′. It leaves at 23:36, for Mula.

Add the Sun's and the Moon's places among the stars: 14.2° + 229.4° = 243.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 240°00′–253°20′ is the 19th, Parigha. It ends at 21:12, then Shiva.

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 ended at 21:19 Sat, when the lead reached 210°; Vishti runs until 07:45.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:25 to 06:25 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: Meena gives Chaitra. The Sun enters Mesha on 13 Apr, inside the month. The next new moon, 9 May, finds it in Mesha and begins Vaishakha.

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 9 May, with the Sun in Mesha, begins Vaishakha. Until then this Krishna paksha reads Vaishakha here, and Chaitra in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 10 Apr 2013, 06:35 Wed. Since then the Sun has moved 17.6° round the stars. Vikram Samvat numbers that year 2070; Shaka Samvat numbers it 1935.