Panchang in Ipameri, Goiás, Brazil Wed 13 Oct 2077

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 12:34 on Wed 13 Oct to 15:03 on Thu 14 Oct, so only Wednesday’s pradosha (18:12–20:31) 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: 312°–324° is the 27th, Krishna Dwadashi. A day takes the tithi in force at its sunrise, 05:44 here. Ekadashi ended at 10:15 Tue, before it. Dwadashi ends at 12:34, when the lead reaches 324°. The lead passed 180° at the full moon of 1 Oct, so the Moon is waning: Krishna paksha.

The night of Tue 12 Oct ran from sunset 18:12 Tue to sunrise 05:44, 11 h 32 m. Cut into 15 muhurtas of 46 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:44 to 18:12, 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 night here, 18:12 to 05:44 Thu, 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 fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Purva Phalguni spans 133°20′–146°40′; the Moon entered its pada 1 at 133°20′. It leaves at 02:02 Thu, for Uttara Phalguni.

Add the Sun's and the Moon's places among the stars: 175.7° + 136.6° = 312.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 306°40′–320°00′ is the 24th, Shukla. It ends at 20:00, then Brahma.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Dwadashi is Kaulava and the second Taitila. Kaulava ended at 23:23 Tue, when the lead reached 318°; Taitila runs until 12:34.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:44 to 05:44 Thu, so the hours after midnight still belong to Budhawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Sep 02:54 Fri to 16 Oct 20:08 Sat the Sun stayed in Kanya, entering Tula at 17 Oct 13:15 Sun, after the new moon. A month with no sankranti is Adhika Ashwina, before Ashwina 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 16 Oct, with the Sun in Kanya, begins Ashwina (Adhik). Until then this Krishna paksha reads Ashwina (Adhik) here, and Ashwina (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 24 Mar 2077, 05:25 Wed. Since then the Sun has moved 196.3° round the stars. Vikram Samvat numbers that year 2134; Shaka Samvat numbers it 1999.