Panchang in Ipameri, Goiás, Brazil Fri 1 Jun 1951

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 07:40 on Fri 1 Jun to 09:25 on Sat 2 Jun, so only Friday’s pradosha (17:44–20:18) 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, 06:36 here. Ekadashi ended at 06:14 Thu, before it. Dwadashi ends at 07:40, when the lead reaches 324°. The lead passed 180° at the full moon of 21 May, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Dwadashi began at 06:14 Thu, before sunrise at 06:35 Thu, and ends at 07:40, after the next sunrise at 06:36. Both days read Dwadashi: it is a vriddhi tithi here.

The night of Thu 31 May ran from sunset 17:44 Thu to sunrise 06:36, 12 h 52 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:36 to 17:44, splits into 8 choghadiyas of 1 h 23 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:44 to 06:36 Sat, splits into 8 choghadiyas of 1 h 36 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′. Ashwini spans 0°00′–13°20′; the Moon entered its pada 4 at 10°. It leaves at 12:20, for Bharani.

Add the Sun's and the Moon's places among the stars: 46.9° + 10.4° = 57.3°. The sum, cut into 27 parts of 13°20′, gives the yoga: 53°20′–66°40′ is the 5th, Shobhana. It ends at 23:40, then Atiganda.

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 18:54 Thu, when the lead reached 318°; Taitila runs until 07:40.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:36 to 06:36 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: Mesha gives Vaishakha. The Sun enters Vrishabha on 14 May, inside the month. The next new moon, 4 Jun, finds it in Vrishabha and begins Jyeshtha.

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 4 Jun, with the Sun in Vrishabha, begins Jyeshtha. Until then this Krishna paksha reads Jyeshtha here, and Vaishakha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 6 Apr 1951, 07:51 Fri. Since then the Sun has moved 54.2° round the stars. Vikram Samvat numbers that year 2008; Shaka Samvat numbers it 1873.