Panchang in Sevan, Gegharkunik, Armenia Sun 24 Nov 1935

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 03:52 on Sun 24 Nov to 04:58 on Mon 25 Nov, so only Sunday night’s nishitha (23:18–00:15 Mon) 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: 336°–348° is the 29th, Krishna Chaturdashi. A day takes the tithi in force at its sunrise, 06:55 here. Trayodashi ended at 03:52, before it. Chaturdashi ends at 04:58 Mon, when the lead reaches 348°. The lead passed 180° at the full moon of 10 Nov, so the Moon is waning: Krishna paksha.

The night of Sat 23 Nov ran from sunset 16:37 Sat to sunrise 06:55, 14 h 18 m. Cut into 15 muhurtas of 57 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:55 to 16:37, 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 night here, 16:37 to 06:56 Mon, 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 fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Swati spans 186°40′–200°00′; the Moon entered its pada 3 at 193°20′. It leaves at 15:45, for Vishakha.

Add the Sun's and the Moon's places among the stars: 218° + 195.4° = 413.4°, one full turn and 53.4°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 53°20′–66°40′ is the 5th, Shobhana. It ends at 06:29 Mon, then Atiganda.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Chaturdashi is Vishti and the second Shakuni. Vishti runs until 16:29, when the lead reaches 342°; Shakuni until 04:58 Mon.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:55 to 06:56 Mon, so the hours after midnight still belong to Raviwara.

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: Tula gives Kartika. The Sun enters Vrishchika on 16 Nov, inside the month. The next new moon, 26 Nov, finds it in Vrishchika and begins Margashirsha.

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 26 Nov, with the Sun in Vrishchika, begins Margashirsha. Until then this Krishna paksha reads Margashirsha here, and Kartika in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 3 Apr 1935, 15:10 Wed. Since then the Sun has moved 228.1° round the stars. Vikram Samvat numbers that year 1992; Shaka Samvat numbers it 1857.