Panchang in Ipameri, Goiás, Brazil Fri 30 Nov 1979

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 20:33 on Fri 30 Nov to 18:29 on Sat 1 Dec, so it touches only Friday’s pradosha (18:34–20:45). No text giving Pradosh Vrat’s time was found; pradosha is Tithika’s convention.

Pradosh Vrat: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 132°–144° is the 12th, Shukla Dwadashi. A day takes the tithi in force at its sunrise, 05:28 here. Ekadashi ended at 22:45 Thu, before it. Dwadashi ends at 20:33, when the lead reaches 144°. The lead passed 0° at the new moon of 19 Nov, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 06:55, came before Ekadashi ended at 07:15: this day reads Ekadashi. Dwadashi ends at 05:03 Sat, before the next sunrise, so no day here reads Dwadashi: it is kshaya.

Ipameri · UTC−3

Sunrise here, 05:28, came after Ekadashi ended at 22:45 Thu: this day reads Dwadashi.

The night of Thu 29 Nov ran from sunset 18:33 Thu to sunrise 05:28, 10 h 55 m. Cut into 15 muhurtas of 43 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:28 to 18:34, splits into 8 choghadiyas of 1 h 38 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:34 to 05:28 Sat, splits into 8 choghadiyas of 1 h 21 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′. Revati spans 346°40′–360°00′; the Moon entered its pada 4 at 356°40′. It leaves at 06:03, for Ashwini.

Add the Sun's and the Moon's places among the stars: 224° + 359.7° = 583.7°, one full turn and 223.7°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 213°20′–226°40′ is the 17th, Vyatipata. It ends at 10:17, then Variyana.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Dwadashi is Bava and the second Balava. Bava runs until 09:39, when the lead reaches 138°; Balava until 20:33.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:28 to 05:28 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: Vrishchika gives Margashirsha. The Sun enters Dhanu on 16 Dec, inside the month. The next new moon, 19 Dec, finds it in Dhanu and begins Pausha.

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 19 Nov, with the Sun in Vrishchika, began Margashirsha. This Shukla paksha reads Margashirsha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 27 Mar 1979, 23:59 Tue. Since then the Sun has moved 240.7° round the stars. Vikram Samvat numbers that year 2036; Shaka Samvat numbers it 1901.