Panchang in Ipameri, Goiás, Brazil Sun 16 Mar 1919

Purnima follows the tithi at sunrise. Purnima runs from 11:19 on Sat 15 Mar to 12:40 on Sun 16 Mar, so it holds sunrise only on Sun 16 Mar, at 06:15. No text giving Purnima’s time was found; sunrise is Tithika’s convention.

Purnima: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 168°–180° is the 15th, Shukla Purnima. A day takes the tithi in force at its sunrise, 06:15 here. Chaturdashi ended at 11:19 Sat, before it. Purnima ends at 12:40, when the lead reaches 180°. The lead passed 0° at the new moon of 2 Mar, so the Moon is waxing: Shukla paksha.

The night of Sat 15 Mar ran from sunset 18:28 Sat to sunrise 06:15, 11 h 47 m. Cut into 15 muhurtas of 47 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:15 to 18:27, splits into 8 choghadiyas of 1 h 31 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:27 to 06:15 Mon, splits into 8 choghadiyas of 1 h 28 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′. Uttara Phalguni spans 146°40′–160°00′; the Moon entered its pada 1 at 146°40′. It leaves at 03:52 Mon, for Hasta.

Add the Sun's and the Moon's places among the stars: 332° + 149° = 481°, one full turn and 121°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 120°00′–133°20′ is the 10th, Ganda. It ends at 04:39 Mon, then Vriddhi.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Purnima is Vishti and the second Bava. Vishti ended at 23:57 Sat, when the lead reached 174°; Bava runs until 12:40.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:15 to 06:15 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: Kumbha gives Phalguna. The Sun enters Meena on 14 Mar, inside the month. The next new moon, 31 Mar, finds it in Meena and begins Chaitra.

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 2 Mar, with the Sun in Kumbha, began Phalguna. This Shukla paksha reads Phalguna in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 11 Apr 1918, 01:33 Thu. Since then the Sun has moved 334.2° round the stars. Vikram Samvat numbers that year 1975; Shaka Samvat numbers it 1840.