Panchang in Chahārbāgh, Alborz Province, Iran Tue 3 May 2016

Smartas test Ekadashi at sunrise: it holds sunrise on Tue 3 May only, at 06:12: Tue 3 May. Vaishnavas test arunodaya: Dashami ended at 16:29 Mon, before it (04:36–06:12).

Varuthini Ekadashi: every date in Chahārbāgh

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 300°–312° is the 26th, Krishna Ekadashi. A day takes the tithi in force at its sunrise, 06:12 here. Dashami ended at 16:29 Mon, before it. Ekadashi ends at 13:58, when the lead reaches 312°. The lead passed 180° at the full moon of 22 Apr, so the Moon is waning: Krishna paksha.

The night of Mon 2 May ran from sunset 19:54 Mon to sunrise 06:12, 10 h 18 m. Cut into 15 muhurtas of 41 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:12 to 19:55, splits into 8 choghadiyas of 1 h 42 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 19:55 to 06:11 Wed, splits into 8 choghadiyas of 1 h 17 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′. Purva Bhadrapada spans 320°00′–333°20′; the Moon entered its pada 2 at 323°20′. It leaves at 17:20, for Uttara Bhadrapada.

Add the Sun's and the Moon's places among the stars: 19° + 326.6° = 345.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 333°20′–346°40′ is the 26th, Indra. It ends at 07:53, then Vaidhriti.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Ekadashi is Bava and the second Balava. Bava ended at 03:18, when the lead reached 306°; Balava runs until 13:58.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:12 to 06:11 Wed, so the hours after midnight still belong to Mangalawara.

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: Meena gives Chaitra. The Sun enters Mesha on 13 Apr, inside the month. The next new moon, 6 May, finds it in Mesha and begins Vaishakha.

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 6 May, with the Sun in Mesha, begins Vaishakha. Until then this Krishna paksha reads Vaishakha here, and Chaitra in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 7 Apr 2016, 15:53 Thu. Since then the Sun has moved 25° round the stars. Vikram Samvat numbers that year 2073; Shaka Samvat numbers it 1938.