Panchang in Ipameri, Goiás, Brazil Sun 12 Jun 1988

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 07:00 on Sun 12 Jun to 06:24 on Mon 13 Jun, so only Sunday night’s nishitha (23:46–00:38 Mon) 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, 06:40 here. Dwadashi ended at 07:58 Sat, before it. Trayodashi ends at 07:00, when the lead reaches 336°. The lead passed 180° at the full moon of 31 May, so the Moon is waning: Krishna paksha.

A day takes the tithi in force at its sunrise. Chaturdashi began at 07:00 and ended at 06:24 Mon, between the sunrises of 06:40 and 06:40 Mon. Sunday reads Trayodashi and Monday reads Amavasya: Chaturdashi is a kshaya tithi here.

The night of Sat 11 Jun ran from sunset 17:44 Sat to sunrise 06:40, 12 h 56 m. Cut into 15 muhurtas of 51 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:40 to 17:45, 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, 17:45 to 06:40 Mon, splits into 8 choghadiyas of 1 h 36 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 17:54, for Rohini.

Add the Sun's and the Moon's places among the stars: 57.9° + 33.8° = 91.7°. The sum, cut into 27 parts of 13°20′, gives the yoga: 80°00′–93°20′ is the 7th, Sukarma. It ends at 09:24, 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 19:26 Sat, when the lead reached 330°; Vanija runs until 07:00.

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

A month normally holds one sankranti, the Sun's entry into a new rashi. From 15 May 19:10 Sun to 14 Jun 06:13 Tue the Sun stayed in Vrishabha, entering Mithuna at 14 Jun 10:30 Tue, 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 1988, 23:02 Thu. Since then the Sun has moved 83.9° round the stars. Vikram Samvat numbers that year 2045; Shaka Samvat numbers it 1910.