Panchang in Ipameri, Goiás, Brazil Sun 17 Aug 1952

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 04:37 on Sun 17 Aug to 07:08 on Mon 18 Aug, so only Sunday’s pradosha (18:03–20:32) 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, 06:30 here. Dwadashi ended at 04:37, before it. Trayodashi ends at 07:08 Mon, when the lead reaches 336°. The lead passed 180° at the full moon of 5 Aug, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Trayodashi began at 04:37, before sunrise at 06:30, and ends at 07:08 Mon, after the next sunrise at 06:29 Mon. Both days read Trayodashi: it is a vriddhi tithi here.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 05:51, came before Dwadashi ended at 13:07: this day reads Dwadashi.

Ipameri · UTC−3

Sunrise here, 06:30, came after Dwadashi ended at 04:37: this day reads Trayodashi.

The night of Sat 16 Aug ran from sunset 18:02 Sat to sunrise 06:30, 12 h 28 m. Cut into 15 muhurtas of 49 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:30 to 18:03, 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, 18:03 to 06:29 Mon, splits into 8 choghadiyas of 1 h 33 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 2 at 83°20′. It leaves at 21:15, for Pushya.

Add the Sun's and the Moon's places among the stars: 121.2° + 86.1° = 207.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 200°00′–213°20′ is the 16th, Siddhi. It ends at 17:53, then Vyatipata.

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 17:51, when the lead reaches 330°; Vanija until 07:08 Mon.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:30 to 06:29 Mon, so the hours after midnight still belong to Raviwara.

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: Karka gives Shravana. The Sun enters Simha on 16 Aug, inside the month. The next new moon, 20 Aug, finds it in Simha and begins Bhadrapada.

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 20 Aug, with the Sun in Simha, begins Bhadrapada. Until then this Krishna paksha reads Bhadrapada here, and Shravana in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 25 Mar 1952, 18:12 Tue. Since then the Sun has moved 139.3° round the stars. Vikram Samvat numbers that year 2009; Shaka Samvat numbers it 1874.