Panchang in Myshkin, Yaroslavl Oblast, Russia Thu 25 May 2017

Vat Savitri Vrat follows the tithi at sunrise. Amavasya runs from 02:38 on Thu 25 May to 22:44 on Thu 25 May, so it holds sunrise only on Thu 25 May, at 03:44. No text giving Vat Savitri Vrat’s time was found; sunrise is Tithika’s convention.

Vat Savitri Vrat: every date in Myshkin

Amavasya follows the tithi at sunrise. Amavasya runs from 02:38 on Thu 25 May to 22:44 on Thu 25 May, so it holds sunrise only on Thu 25 May, at 03:44. No text giving Amavasya’s time was found; sunrise is Tithika’s convention.

Amavasya: every date in Myshkin

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, 03:44 here. Chaturdashi ended at 02:38, before it. Amavasya ends at 22:44, when the lead reaches 360°. The lead passed 180° at the full moon of 11 May, so the Moon is waning: Krishna paksha.

The night of Wed 24 May ran from sunset 21:00 Wed to sunrise 03:44, 6 h 44 m. Cut into 15 muhurtas of 26 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 03:44 to 21:02, splits into 8 choghadiyas of 2 h 9 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 21:02 to 03:43 Fri, splits into 8 choghadiyas of 50 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′. Krittika spans 26°40′–40°00′; the Moon entered its pada 1 at 26°40′. It leaves at 21:40, for Rohini.

Add the Sun's and the Moon's places among the stars: 39.9° + 28.6° = 68.5°. The sum, cut into 27 parts of 13°20′, gives the yoga: 66°40′–80°00′ is the 6th, Atiganda. It ends at 20:44, then Sukarma.

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 12:42, when the lead reaches 354°; Nagava until 22:44.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 03:44 to 03:43 Fri, so the hours after midnight still belong to Guruwara.

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: Mesha gives Vaishakha. The Sun enters Vrishabha on 14 May, inside the month. The next new moon, 25 May, finds it in Vrishabha and begins Jyeshtha.

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 25 May, with the Sun in Vrishabha, begins Jyeshtha. Until then this Krishna paksha reads Jyeshtha here, and Vaishakha in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 28 Mar 2017, 05:57 Tue. Since then the Sun has moved 56.4° round the stars. Vikram Samvat numbers that year 2074; Shaka Samvat numbers it 1939.