Panchang in Davinópolis, Maranhão, Brazil Tue 18 Nov 1980

Smartas test Ekadashi at sunrise: it holds sunrise on Tue 18 Nov only, at 05:43: Tue 18 Nov. Vaishnavas test arunodaya: Dashami ended at 20:21 Mon, before it (04:07–05:43).

Dev Uthani Ekadashi: every date in Davinópolis

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, 05:43 here. Dashami ended at 20:21 Mon, before it. Ekadashi ends at 17:34, when the lead reaches 132°. The lead passed 0° at the new moon of 7 Nov, so the Moon is waxing: Shukla paksha.

The night of Mon 17 Nov ran from sunset 18:05 Mon to sunrise 05:43, 11 h 38 m. Cut into 15 muhurtas of 46 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:43 to 18:06, splits into 8 choghadiyas of 1 h 32 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:06 to 05:43 Wed, splits into 8 choghadiyas of 1 h 27 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′. Uttara Bhadrapada spans 333°20′–346°40′; the Moon entered its pada 2 at 336°40′. It leaves at 20:08, for Revati.

Add the Sun's and the Moon's places among the stars: 212.6° + 337.8° = 550.4°, one full turn and 190.4°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 186°40′–200°00′ is the 15th, Vajra. It ends at 20:21, 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 runs until 07:02, when the lead reaches 126°; Vishti until 17:34.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:43 to 05:43 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: Tula gives Kartika. The Sun enters Vrishchika on 15 Nov, inside the month. The next new moon, 7 Dec, finds it in Vrishchika and begins Margashirsha.

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 7 Nov, with the Sun in Tula, began Kartika. This Shukla paksha reads Kartika in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 16 Mar 1980, 15:55 Sun. Since then the Sun has moved 239.8° round the stars. Vikram Samvat numbers that year 2037; Shaka Samvat numbers it 1902.