Panchang in Ipameri, Goiás, Brazil Sat 28 May 1904

Purnima follows the tithi at sunrise. Purnima begins at 06:51 on Sat 28 May, after that sunrise, and ends at 05:48 on Sun 29 May, before the next: it holds no sunrise. A tithi that holds no sunrise is kept on the day it is current: Sat 28 May. 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: 156°–168° is the 14th, Shukla Chaturdashi. A day takes the tithi in force at its sunrise, 06:34 here. Trayodashi ended at 08:24 Fri, before it. Chaturdashi ends at 06:58, when the lead reaches 168°. 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. Purnima began at 06:58 and ended at 05:54 Sun, between the sunrises of 06:34 and 06:35 Sun. Saturday reads Chaturdashi and Sunday reads Pratipada: Purnima is a kshaya tithi here.

The night of Fri 27 May ran from sunset 17:44 Fri 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 Sun, 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 09:09, for Anuradha.

Add the Sun's and the Moon's places among the stars: 44.1° + 211.9° = 256°. The sum, cut into 27 parts of 13°20′, gives the yoga: 253°20′–266°40′ is the 20th, Shiva. It ends at 00:18 Sun, then Siddha.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Chaturdashi is Garaja and the second Vanija. Garaja ended at 19:39 Fri, when the lead reached 162°; Vanija runs until 06:58.

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

A month normally holds one sankranti, the Sun's entry into a new rashi. From 15 May 07:57 Sun to 13 Jun 18:10 Mon the Sun stayed in Vrishabha, entering Mithuna at 13 Jun 21:50 Mon, 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 1904, 02:39 Thu. Since then the Sun has moved 70.4° round the stars. Vikram Samvat numbers that year 1961; Shaka Samvat numbers it 1826.