Panchang in Sevan, Gegharkunik, Armenia Wed 24 Oct 1973

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 07:20 on Wed 24 Oct to 07:04 on Thu 25 Oct, so only Wednesday night’s nishitha (00:18 Thu–01:10 Thu) 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, 07:20 here. Trayodashi ended at 07:20, before it. Chaturdashi ends at 07:04 Thu, when the lead reaches 348°. The lead passed 180° at the full moon of 12 Oct, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 06:27, came before Trayodashi ended at 08:50: this day reads Trayodashi.

Sevan · UTC+4

Sunrise here, 07:20, came after Trayodashi ended at 07:20: this day reads Chaturdashi.

The night of Tue 23 Oct ran from sunset 18:08 Tue to sunrise 07:20, 13 h 12 m. Cut into 15 muhurtas of 52 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 07:20 to 18:07, splits into 8 choghadiyas of 1 h 20 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:07 to 07:21 Thu, splits into 8 choghadiyas of 1 h 39 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′. Hasta spans 160°00′–173°20′; the Moon entered its pada 1 at 160°. It leaves at 02:02 Thu, for Chitra.

Add the Sun's and the Moon's places among the stars: 187.1° + 163.1° = 350.2°. The sum, cut into 27 parts of 13°20′, gives the yoga: 346°40′–360°00′ is the 27th, Vaidhriti. It ends at 00:00 Thu, then Vishkambha.

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 19:08, when the lead reaches 342°; Shakuni until 07:04 Thu.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 07:20 to 07:21 Thu, so the hours after midnight still belong to Budhawara.

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: Kanya gives Ashwina. The Sun enters Tula on 17 Oct, inside the month. The next new moon, 26 Oct, finds it in Tula and begins Kartika.

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 Oct, with the Sun in Tula, begins Kartika. Until then this Krishna paksha reads Kartika here, and Ashwina in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 3 Apr 1973, 15:45 Tue. Since then the Sun has moved 197° round the stars. Vikram Samvat numbers that year 2030; Shaka Samvat numbers it 1895.