Panchang in Sevan, Gegharkunik, Armenia Thu 11 Sep 1913

Smartas test Ekadashi at sunrise. It holds both sunrises, 05:32 on Wed 10 Sep and 05:33 on Thu 11 Sep. Ekadashi (05:01 Wed 10 Sep to 06:28 Thu 11 Sep) and Dwadashi (06:28 Thu 11 Sep to 08:23 Fri 12 Sep) are both longer than their day; when both grow, Smartas take the later day: Thu 11 Sep. Vaishnavas test arunodaya: on Wed 10 Sep Dashami lasts until 05:01, inside it (03:56–05:32); on Thu 11 Sep Ekadashi holds all of it.

Parsva Ekadashi: every date in Sevan

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, 05:35 here. Dashami ended at 05:03 Wed, before it. Ekadashi ends at 06:30, when the lead reaches 132°. The lead passed 0° at the new moon of 31 Aug, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Ekadashi began at 05:03 Wed, before sunrise at 05:34 Wed, and ends at 06:30, after the next sunrise at 05:35. Both days read Ekadashi: it is a vriddhi tithi here.

The night of Wed 10 Sep ran from sunset 18:18 Wed to sunrise 05:35, 11 h 17 m. Cut into 15 muhurtas of 45 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:35 to 18:17, 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 night here, 18:17 to 05:36 Fri, 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 fixed stars divide the Moon's path into 27 nakshatras of 13°20′, each in 4 padas of 3°20′. Uttara Ashadha spans 266°40′–280°00′; the Moon entered its pada 4 at 276°40′. It leaves at 12:09, for Shravana.

Add the Sun's and the Moon's places among the stars: 145.1° + 276.7° = 421.8°, one full turn and 61.8°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 53°20′–66°40′ is the 5th, Shobhana. It ends at 14:33, then Atiganda.

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 17:43 Wed, when the lead reached 126°; Vishti runs until 06:30.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:35 to 05:36 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: Simha gives Bhadrapada. The Sun enters Kanya on 16 Sep, inside the month. The next new moon, 30 Sep, finds it in Kanya and begins Ashwina.

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 31 Aug, with the Sun in Simha, began Bhadrapada. This Shukla paksha reads Bhadrapada in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 6 Apr 1913, 20:47 Sun. Since then the Sun has moved 151.4° round the stars. Vikram Samvat numbers that year 1970; Shaka Samvat numbers it 1835.