Panchang in Sevan, Gegharkunik, Armenia Sat 19 Jan 1985

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 07:23 on Sat 19 Jan to 06:43 on Sun 20 Jan, so only Saturday night’s nishitha (00:42 Sun–01:39 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, 08:19 here. Trayodashi ended at 07:23, before it. Chaturdashi ends at 06:43 Sun, when the lead reaches 348°. The lead passed 180° at the full moon of 7 Jan, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 07:14, came before Trayodashi ended at 08:53: this day reads Trayodashi.

Sevan · UTC+4

Sunrise here, 08:19, came after Trayodashi ended at 07:23: this day reads Chaturdashi.

The night of Fri 18 Jan ran from sunset 18:01 Fri to sunrise 08:19, 14 h 18 m. Cut into 15 muhurtas of 57 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 08:19 to 18:02, 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, 18:02 to 08:19 Sun, 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′. Mula spans 240°00′–253°20′; the Moon entered its pada 4 at 250°. It leaves at 10:55, for Purva Ashadha.

Add the Sun's and the Moon's places among the stars: 275.4° + 251.9° = 527.3°, one full turn and 167.3°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 160°00′–173°20′ is the 13th, Vyaghata. It ends at 18:24, then Harshana.

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 19:00, when the lead reaches 342°; Shakuni until 06:43 Sun.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 08:19 to 08:19 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: Dhanu gives Pausha. The Sun enters Makara on 14 Jan, inside the month. The next new moon, 21 Jan, finds it in Makara and begins Magha.

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 21 Jan, with the Sun in Makara, begins Magha. Until then this Krishna paksha reads Magha here, and Pausha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 1 Apr 1984, 17:09 Sun. Since then the Sun has moved 287.1° round the stars. Vikram Samvat numbers that year 2041; Shaka Samvat numbers it 1906.