Panchang in Ipameri, Goiás, Brazil Tue 17 May 2016

Smartas test Ekadashi at sunrise. It holds both sunrises, 06:31 on Mon 16 May and 06:31 on Tue 17 May. Ekadashi (06:20 Mon 16 May to 08:47 Tue 17 May) and Dwadashi (08:47 Tue 17 May to 11:22 Wed 18 May) are both longer than their day; when both grow, Smartas take the later day: Tue 17 May. Vaishnavas test arunodaya: on Mon 16 May Dashami lasts until 06:20, inside it (04:55–06:31); on Tue 17 May Ekadashi holds all of it.

Mohini Ekadashi: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 120°–132° is the 11th, Shukla Ekadashi. A day takes the tithi in force at its sunrise, 06:31 here. Dashami ended at 06:20 Mon, before it. Ekadashi ends at 08:47, when the lead reaches 132°. The lead passed 0° at the new moon of 6 May, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Ekadashi began at 06:20 Mon, before sunrise at 06:31 Mon, and ends at 08:47, after the next sunrise at 06:31. Both days read Ekadashi: it is a vriddhi tithi here.

The night of Mon 16 May ran from sunset 17:47 Mon to sunrise 06:31, 12 h 44 m. Cut into 15 muhurtas of 50 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:31 to 17:46, splits into 8 choghadiyas of 1 h 24 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:46 to 06:31 Wed, splits into 8 choghadiyas of 1 h 35 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′. Hasta spans 160°00′–173°20′; the Moon entered its pada 2 at 163°20′. It leaves at 01:55 Wed, for Chitra.

Add the Sun's and the Moon's places among the stars: 32.8° + 163.8° = 196.6°. The sum, cut into 27 parts of 13°20′, gives the yoga: 186°40′–200°00′ is the 15th, Vajra. It ends at 12:52, then Siddhi.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Ekadashi is Vanija and the second Vishti. Vanija ended at 19:32 Mon, when the lead reached 126°; Vishti runs until 08:47.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:31 to 06:31 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: Mesha gives Vaishakha. The Sun enters Vrishabha on 14 May, inside the month. The next new moon, 4 Jun, 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 6 May, with the Sun in Mesha, began Vaishakha. This Shukla paksha reads Vaishakha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 7 Apr 2016, 08:23 Thu. Since then the Sun has moved 38.8° round the stars. Vikram Samvat numbers that year 2073; Shaka Samvat numbers it 1938.