Panchang in Ipameri, Goiás, Brazil Tue 13 Sep 2050

Shiva’s worship centres on nishitha, the midnight muhurta. Chaturdashi runs from 19:52 on Tue 13 Sep to 22:19 on Wed 14 Sep, so only Tuesday night’s nishitha (23:44–00:32 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, 06:09 here. Dwadashi ended at 17:34 Mon, before it. Trayodashi ends at 19:52, when the lead reaches 336°. The lead passed 180° at the full moon of 1 Sep, so the Moon is waning: Krishna paksha.

The night of Mon 12 Sep ran from sunset 18:07 Mon to sunrise 06:09, 12 h 2 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:09 to 18:07, splits into 8 choghadiyas of 1 h 29 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:07 to 06:09 Wed, splits into 8 choghadiyas of 1 h 30 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′. Ashlesha spans 106°40′–120°00′; the Moon entered its pada 3 at 113°20′. It leaves at 14:15, for Magha.

Add the Sun's and the Moon's places among the stars: 146.2° + 116° = 262.2°. The sum, cut into 27 parts of 13°20′, gives the yoga: 253°20′–266°40′ is the 20th, Shiva. It ends at 14:28, then Siddha.

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 runs until 06:42, when the lead reaches 330°; Vanija until 19:52.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:09 to 06:09 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 17 Aug 08:47 Wed to 16 Sep 00:49 Fri the Sun stayed in Simha, entering Kanya at 17 Sep 03:03 Sat, after the new moon. A month with no sankranti is Adhika Bhadrapada, before Bhadrapada 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 16 Sep, with the Sun in Simha, begins Bhadrapada (Adhik). Until then this Krishna paksha reads Bhadrapada (Adhik) here, and Bhadrapada (Adhik) in the amanta count.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 22 Mar 2050, 21:41 Tue. Since then the Sun has moved 168.2° round the stars. Vikram Samvat numbers that year 2107; Shaka Samvat numbers it 1972.