Panchang in Ipameri, Goiás, Brazil Tue 12 Aug 1958

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 06:14 on Tue 12 Aug to 04:55 on Wed 13 Aug, so only Tuesday’s pradosha (18:01–20:32) falls within it. 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: 324°–336° is the 28th, Krishna Trayodashi. A day takes the tithi in force at its sunrise, 06:33 here. Dwadashi ended at 06:14, before it. Trayodashi ends at 04:55 Wed, when the lead reaches 336°. The lead passed 180° at the full moon of 30 Jul, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 05:48, came before Dwadashi ended at 14:44: this day reads Dwadashi.

Ipameri · UTC−3

Sunrise here, 06:33, came after Dwadashi ended at 06:14: this day reads Trayodashi.

The night of Mon 11 Aug ran from sunset 18:01 Mon to sunrise 06:33, 12 h 32 m. Cut into 15 muhurtas of 50 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:33 to 18:01, splits into 8 choghadiyas of 1 h 26 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:01 to 06:33 Wed, splits into 8 choghadiyas of 1 h 34 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′. Punarvasu spans 80°00′–93°20′; the Moon entered its pada 1 at 80°. It leaves at 05:52 Wed, for Pushya.

Add the Sun's and the Moon's places among the stars: 115.9° + 80.1° = 196°. The sum, cut into 27 parts of 13°20′, gives the yoga: 186°40′–200°00′ is the 15th, Vajra. It ends at 13:17, then Siddhi.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Garaja and the second Vanija. Garaja runs until 17:40, when the lead reaches 330°; Vanija until 04:55 Wed.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:33 to 06:33 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 16 Jul 15:33 Wed to 15 Aug 00:33 Fri the Sun stayed in Karka, entering Simha at 16 Aug 13:17 Sat, after the new moon. A month with no sankranti is Adhika Shravana, before Shravana 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 Aug, with the Sun in Karka, begins Shravana (Adhik). Until then this Krishna paksha reads Shravana (Adhik) here, and Shravana (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 20 Mar 1958, 06:49 Thu. Since then the Sun has moved 139.9° round the stars. Vikram Samvat numbers that year 2015; Shaka Samvat numbers it 1880.