Panchang in Ipameri, Goiás, Brazil Tue 29 May 1923

Purnima follows the tithi at sunrise. Purnima runs from 05:32 on Tue 29 May to 02:07 on Wed 30 May, so it holds sunrise only on Tue 29 May, at 06:34. 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, 06:34 here. Chaturdashi ended at 05:32, before it. Purnima ends at 02:07 Wed, when the lead reaches 180°. The lead passed 0° at the new moon of 15 May, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 05:24, came before Chaturdashi ended at 14:02: this day reads Chaturdashi.

Ipameri · UTC−3

Sunrise here, 06:34, came after Chaturdashi ended at 05:32: this day reads Purnima.

The night of Mon 28 May ran from sunset 17:44 Mon to sunrise 06:34, 12 h 50 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:34 to 17:44, splits into 8 choghadiyas of 1 h 23 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:44 to 06:35 Wed, splits into 8 choghadiyas of 1 h 36 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′. Vishakha spans 200°00′–213°20′; the Moon entered its pada 4 at 210°. It leaves at 07:24, for Anuradha.

Add the Sun's and the Moon's places among the stars: 44.2° + 212.8° = 257°. The sum, cut into 27 parts of 13°20′, gives the yoga: 253°20′–266°40′ is the 20th, Shiva. It ends at 21:06, then Siddha.

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 runs until 15:48, when the lead reaches 174°; Bava until 02:07 Wed.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:34 to 06:35 Wed, so the hours after midnight still belong to Mangalawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 15 May 19:38 Tue to 14 Jun 09:41 Thu the Sun stayed in Vrishabha, entering Mithuna at 14 Jun 18:42 Thu, after the new moon. A month with no sankranti is Adhika Jyeshtha, before Jyeshtha itself.

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 15 May, with the Sun in Vrishabha, began Jyeshtha (Adhik). This Shukla paksha reads Jyeshtha (Adhik) in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 17 Mar 1923, 09:51 Sat. Since then the Sun has moved 71.1° round the stars. Vikram Samvat numbers that year 1980; Shaka Samvat numbers it 1845.