Panchang in Ipameri, Goiás, Brazil Mon 12 Sep 2050

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi began at 17:34 on Mon 12 Sep, before that evening’s pradosha, and ended at 19:52 on Tue 13 Sep, partway into the next. The Nirnayasindhu takes the evening Trayodashi fills: Mon 12 Sep. 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, 06:10 here. Ekadashi ended at 15:30 Sun, before it. Dwadashi ends at 17:34, when the lead reaches 324°. The lead passed 180° at the full moon of 1 Sep, so the Moon is waning: Krishna paksha.

The night of Sun 11 Sep ran from sunset 18:07 Sun to sunrise 06:10, 12 h 3 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:10 to 18:07, splits into 8 choghadiyas of 1 h 29 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:07 to 06:09 Tue, splits into 8 choghadiyas of 1 h 30 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′. Pushya spans 93°20′–106°40′; the Moon entered its pada 4 at 103°20′. It leaves at 11:27, for Ashlesha.

Add the Sun's and the Moon's places among the stars: 145.3° + 104° = 249.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 240°00′–253°20′ is the 19th, Parigha. It ends at 13:40, then Shiva.

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 04:30, when the lead reached 318°; Taitila runs until 17:34.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:10 to 06:09 Tue, so the hours after midnight still belong to Somawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 17 Aug 08:47 Wed to 16 Sep 00:49 Fri the Sun stayed in Simha, entering Kanya at 17 Sep 03:03 Sat, after the new moon. A month with no sankranti is Adhika Bhadrapada, before Bhadrapada 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 Sep, with the Sun in Simha, begins Bhadrapada (Adhik). Until then this Krishna paksha reads Bhadrapada (Adhik) here, and Bhadrapada (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 22 Mar 2050, 21:41 Tue. Since then the Sun has moved 167.3° round the stars. Vikram Samvat numbers that year 2107; Shaka Samvat numbers it 1972.