Panchang in Sevan, Gegharkunik, Armenia Sat 26 Jan 2013

Purnima follows the tithi at sunrise. Purnima holds both sunrises, 08:14 on Sat 26 Jan and 08:14 on Sun 27 Jan. Over two sunrises the Nirnayasindhu takes the first: Sat 26 Jan. No text giving Purnima’s time was found; sunrise is Tithika’s convention.

Purnima: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 168°–180° is the 15th, Shukla Purnima. A day takes the tithi in force at its sunrise, 08:14 here. Chaturdashi ended at 07:17, before it. Purnima ends at 08:38 Sun, when the lead reaches 180°. The lead passed 0° at the new moon of 11 Jan, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Purnima began at 07:17, before sunrise at 08:14, and ends at 08:38 Sun, after the next sunrise at 08:14 Sun. Both days read Purnima: it is a vriddhi tithi here.

A day takes the tithi in force at its sunrise.

New Delhi · IST

Sunrise here, 07:12, came before Chaturdashi ended at 08:47: this day reads Chaturdashi.

Sevan · UTC+4

Sunrise here, 08:14, came after Chaturdashi ended at 07:17: this day reads Purnima.

The night of Fri 25 Jan ran from sunset 18:09 Fri to sunrise 08:14, 14 h 5 m. Cut into 15 muhurtas of 56 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 08:14 to 18:10, splits into 8 choghadiyas of 1 h 14 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:10 to 08:14 Sun, splits into 8 choghadiyas of 1 h 45 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′. Punarvasu spans 80°00′–93°20′; the Moon entered its pada 4 at 90°. It leaves at 13:14, for Pushya.

Add the Sun's and the Moon's places among the stars: 282.3° + 90.8° = 373.1°, one full turn and 13.1°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 0°00′–13°20′ is the 1st, Vishkambha. It ends at 08:39, then Priti.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Purnima is Vishti and the second Bava. Vishti runs until 20:01, when the lead reaches 174°; Bava until 08:38 Sun.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 08:14 to 08:14 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, 10 Feb, 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 11 Jan, with the Sun in Dhanu, began Pausha. This Shukla paksha reads Pausha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 22 Mar 2012, 18:37 Thu. Since then the Sun has moved 304° round the stars. Vikram Samvat numbers that year 2069; Shaka Samvat numbers it 1934.