Panchang in Ipameri, Goiás, Brazil Tue 12 Jun 1923

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 06:56 on Tue 12 Jun to 08:32 on Wed 13 Jun, so only Tuesday night’s nishitha (23:46–00:38 Wed) falls within it. No text giving Masik Shivratri’s time was found; nishitha is Tithika’s convention.

Masik Shivratri: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 324°–336° is the 28th, Krishna Trayodashi. A day takes the tithi in force at its sunrise, 06:39 here. Dwadashi ended at 04:56 Mon, before it. Trayodashi ends at 06:56, when the lead reaches 336°. The lead passed 180° at the full moon of 30 May, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Trayodashi began at 04:56 Mon, before sunrise at 06:39 Mon, and ends at 06:56, after the next sunrise at 06:39. Both days read Trayodashi: it is a vriddhi tithi here.

The night of Mon 11 Jun ran from sunset 17:44 Mon to sunrise 06:39, 12 h 55 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:39 to 17:44, splits into 8 choghadiyas of 1 h 23 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 17:44 to 06:40 Wed, splits into 8 choghadiyas of 1 h 37 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 3 at 33°20′. It leaves at 19:32, for Rohini.

Add the Sun's and the Moon's places among the stars: 57.6° + 33.5° = 91.1°. The sum, cut into 27 parts of 13°20′, gives the yoga: 80°00′–93°20′ is the 7th, Sukarma. It ends at 10:47, then Dhriti.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Trayodashi is Garaja and the second Vanija. Garaja ended at 17:59 Mon, when the lead reached 330°; Vanija runs until 06:56.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:39 to 06:40 Wed, so the hours after midnight still belong to Mangalawara.

A month normally holds one sankranti, the Sun's entry into a new rashi. From 15 May 19:38 Tue to 14 Jun 09:41 Thu the Sun stayed in Vrishabha, entering Mithuna at 14 Jun 18:42 Thu, after the new moon. A month with no sankranti is Adhika Jyeshtha, before Jyeshtha itself.

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 14 Jun, with the Sun in Vrishabha, begins Jyeshtha (Adhik). Until then this Krishna paksha reads Jyeshtha (Adhik) here, and Jyeshtha (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 17 Mar 1923, 09:51 Sat. Since then the Sun has moved 84.5° round the stars. Vikram Samvat numbers that year 1980; Shaka Samvat numbers it 1845.