Panchang in Davinópolis, Maranhão, Brazil Fri 27 Jun 1980

Purnima follows the tithi at sunrise. Purnima begins at 06:36 on Fri 27 Jun, after that sunrise, and ends at 06:02 on Sat 28 Jun, before the next: it holds no sunrise. A tithi that holds no sunrise is kept on the day it is current: Fri 27 Jun. No text giving Purnima’s time was found; sunrise is Tithika’s convention.

Purnima: every date in Davinópolis

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, 06:18 here. Trayodashi ended at 06:38 Thu, before it. Chaturdashi ends at 06:36, when the lead reaches 168°. The lead passed 0° at the new moon of 12 Jun, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Purnima began at 06:36 and ended at 06:02 Sat, between the sunrises of 06:18 and 06:18 Sat. Friday reads Chaturdashi and Saturday reads Pratipada: Purnima is a kshaya tithi here.

The night of Thu 26 Jun ran from sunset 18:06 Thu to sunrise 06:18, 12 h 12 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:18 to 18:06, 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 night here, 18:06 to 06:18 Sat, 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 fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Mula spans 240°00′–253°20′; the Moon entered its pada 1 at 240°. It leaves at 06:14 Sat, for Purva Ashadha.

Add the Sun's and the Moon's places among the stars: 72.3° + 240.1° = 312.4°. The sum, cut into 27 parts of 13°20′, gives the yoga: 306°40′–320°00′ is the 24th, Shukla. It ends at 19:11, then Brahma.

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 18:41 Thu, when the lead reached 162°; Vanija runs until 06:36.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:18 to 06:18 Sat, so the hours after midnight still belong to Shukrawara.

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: Vrishabha gives Jyeshtha. The Sun enters Mithuna on 14 Jun, inside the month. The next new moon, 12 Jul, finds it in Mithuna and begins Ashadha.

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 12 Jun, with the Sun in Vrishabha, began Jyeshtha. This Shukla paksha reads Jyeshtha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 16 Mar 1980, 15:55 Sun. Since then the Sun has moved 99.5° round the stars. Vikram Samvat numbers that year 2037; Shaka Samvat numbers it 1902.