Panchang in Codcod, Western Visayas, Philippines Thu 11 May 1972

Shiva’s Pradosh puja is done in pradosha, the 3 muhurtas after sunset. Trayodashi runs from 23:25 on Wed 10 May to 19:51 on Thu 11 May, so it touches only Thursday’s pradosha (18:00–20:17). No text giving Pradosh Vrat’s time was found; pradosha is Tithika’s convention.

Pradosh Vrat: every date in Codcod

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 19:51 on Thu 11 May to 16:01 on Fri 12 May, so only Thursday night’s nishitha (23:20–00:06 Fri) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: 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 23:25 Wed, before it. Trayodashi ends at 19:51, when the lead reaches 336°. The lead passed 180° at the full moon of 28 Apr, so the Moon is waning: Krishna paksha.

The night of Wed 10 May ran from sunset 18:00 Wed to sunrise 05:26, 11 h 26 m. Cut into 15 muhurtas of 45 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:26 to 18:00, 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, 18:00 to 05:26 Fri, 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 3 at 353°20′. It leaves at 14:27, for Ashwini.

Add the Sun's and the Moon's places among the stars: 26.8° + 354.3° = 381.1°, one full turn and 21.1°. 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 13:41, 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 09:41, when the lead reaches 330°; Vanija until 19:51.

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

A month normally holds one sankranti, the Sun's entry into a new rashi. From 14 Apr 04:30 Fri to 13 May 12:08 Sat the Sun stayed in Mesha, entering Vrishabha at 14 May 12:26 Sun, 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 13 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: 15 Mar 1972, 19:34 Wed. Since then the Sun has moved 55.3° round the stars. Vikram Samvat numbers that year 2029; Shaka Samvat numbers it 1894.