Panchang in Sevan, Gegharkunik, Armenia Sat 28 Jul 1973

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 05:39 on Sat 28 Jul to 02:16 on Sun 29 Jul, so only Saturday night’s nishitha (00:47 Sun–01:25 Sun) 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, 05:52 here. Trayodashi ended at 05:39, before it. Chaturdashi ends at 02:16 Sun, when the lead reaches 348°. The lead passed 180° at the full moon of 15 Jul, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 05:40, came before Trayodashi ended at 07:09: this day reads Trayodashi. Chaturdashi ends at 03:46 Sun, before the next sunrise, so no day here reads Chaturdashi: it is kshaya.

Sevan · UTC+4

Sunrise here, 05:52, came after Trayodashi ended at 05:39: this day reads Chaturdashi.

The night of Fri 27 Jul ran from sunset 20:20 Fri to sunrise 05:52, 9 h 32 m. Cut into 15 muhurtas of 38 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:52 to 20:19, splits into 8 choghadiyas of 1 h 48 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 20:19 to 05:53 Sun, splits into 8 choghadiyas of 1 h 11 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′. Ardra spans 66°40′–80°00′; the Moon entered its pada 4 at 76°40′. It leaves at 09:54, for Punarvasu.

Add the Sun's and the Moon's places among the stars: 101.4° + 77.5° = 178.9°. The sum, cut into 27 parts of 13°20′, gives the yoga: 173°20′–186°40′ is the 14th, Harshana. It ends at 17:41, then Vajra.

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 15:58, when the lead reaches 342°; Shakuni until 02:16 Sun.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:52 to 05:53 Sun, so the hours after midnight still belong to Shaniwara.

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: Mithuna gives Ashadha. The Sun enters Karka on 16 Jul, inside the month. The next new moon, 29 Jul, finds it in Karka and begins Shravana.

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 29 Jul, with the Sun in Karka, begins Shravana. Until then this Krishna paksha reads Shravana here, and Ashadha 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 111.3° round the stars. Vikram Samvat numbers that year 2030; Shaka Samvat numbers it 1895.