Panchang in Sevan, Gegharkunik, Armenia Thu 11 May 1972

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 15:51 on Thu 11 May to 12:01 on Fri 12 May, so only Thursday night’s nishitha (00:36 Fri–01:15 Fri) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: every date in Sevan

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, 05:47 here. Dwadashi ended at 19:25 Wed, before it. Trayodashi ends at 15:51, 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 20:04 Wed to sunrise 05:47, 9 h 43 m. Cut into 15 muhurtas of 38 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:47 to 20:05, splits into 8 choghadiyas of 1 h 47 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 20:05 to 05:46 Fri, splits into 8 choghadiyas of 1 h 12 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 4 at 356°40′. It leaves at 10:27, for Ashwini.

Add the Sun's and the Moon's places among the stars: 27° + 357.1° = 384.1°, one full turn and 24.1°. 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 09:41, 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 ended at 05:41, when the lead reached 330°; Vanija runs until 15:51.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:47 to 05:46 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 00:30 Fri to 13 May 08:08 Sat the Sun stayed in Mesha, entering Vrishabha at 14 May 08:26 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, 15:34 Wed. Since then the Sun has moved 55.5° round the stars. Vikram Samvat numbers that year 2029; Shaka Samvat numbers it 1894.