Panchang in Sevan, Gegharkunik, Armenia Sun 11 Jul 2010

Amavasya follows the tithi at sunrise. Amavasya runs from 03:33 on Sun 11 Jul to 00:40 on Mon 12 Jul, so it holds sunrise only on Sun 11 Jul, at 06:39. No text giving Amavasya’s time was found; sunrise is Tithika’s convention.

Amavasya: every date in Sevan

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 348°–360° is the 30th, Krishna Amavasya. A day takes the tithi in force at its sunrise, 06:39 here. Chaturdashi ended at 03:33, before it. Amavasya ends at 00:40 Mon, when the lead reaches 360°. The lead passed 180° at the full moon of 26 Jun, so the Moon is waning: Krishna paksha.

The night of Sat 10 Jul ran from sunset 21:32 Sat to sunrise 06:39, 9 h 7 m. Cut into 15 muhurtas of 36 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:39 to 21:31, splits into 8 choghadiyas of 1 h 51 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 21:31 to 06:39 Mon, splits into 8 choghadiyas of 1 h 8 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 3 at 73°20′. It leaves at 15:51, for Punarvasu.

Add the Sun's and the Moon's places among the stars: 84.7° + 74.4° = 159.1°. The sum, cut into 27 parts of 13°20′, gives the yoga: 146°40′–160°00′ is the 12th, Dhruva. It ends at 08:04, then Vyaghata.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Amavasya is Chatushpada and the second Nagava. Chatushpada runs until 14:09, when the lead reaches 354°; Nagava until 00:40 Mon.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:39 to 06:39 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: Vrishabha gives Jyeshtha. The Sun enters Mithuna on 15 Jun, inside the month. The next new moon, 12 Jul, finds it in Mithuna and begins Ashadha.

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 12 Jul, with the Sun in Mithuna, begins Ashadha. Until then this Krishna paksha reads Ashadha here, and Jyeshtha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 16 Mar 2010, 01:01 Tue. Since then the Sun has moved 113.5° round the stars. Vikram Samvat numbers that year 2067; Shaka Samvat numbers it 1932.