Panchang in Codcod, Western Visayas, Philippines Sun 12 May 2075

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 03:53 on Sun 12 May to 04:38 on Mon 13 May, so only Sunday’s pradosha (18:01–20:18) falls within it. No text giving Pradosh Vrat’s time was found; pradosha is Tithika’s convention.

Pradosh Vrat: every date in Codcod

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, 05:26 here. Dwadashi ended at 03:53, before it. Trayodashi ends at 04:38 Mon, when the lead reaches 336°. The lead passed 180° at the full moon of 1 May, so the Moon is waning: Krishna paksha.

The night of Sat 11 May ran from sunset 18:01 Sat to sunrise 05:26, 11 h 25 m. Cut into 15 muhurtas of 45 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:26 to 18:01, 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 night here, 18:01 to 05:25 Mon, splits into 8 choghadiyas of 1 h 25 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′. Revati spans 346°40′–360°00′; the Moon entered its pada 2 at 350°. It leaves at 22:12, for Ashwini.

Add the Sun's and the Moon's places among the stars: 26.4° + 351.2° = 377.6°, one full turn and 17.6°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 13°20′–26°40′ is the 2nd, Priti. It ends at 21:25, then Ayushmana.

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 16:13, when the lead reaches 330°; Vanija until 04:38 Mon.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:26 to 05:25 Mon, so the hours after midnight still belong to Raviwara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 15 Apr 16:56 Mon to 15 May 07:23 Wed the Sun stayed in Mesha, entering Vrishabha at 15 May 22:09 Wed, after the new moon. A month with no sankranti is Adhika Vaishakha, before Vaishakha 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 May, with the Sun in Mesha, begins Vaishakha (Adhik). Until then this Krishna paksha reads Vaishakha (Adhik) here, and Vaishakha (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 17 Mar 2075, 03:26 Sun. Since then the Sun has moved 55° round the stars. Vikram Samvat numbers that year 2132; Shaka Samvat numbers it 1997.