Panchang in Ipameri, Goiás, Brazil Sat 28 Mar 2015

Rama’s birth is celebrated at madhyahna, the middle fifth of the day. Navami runs from 17:11 on Fri 27 Mar to 18:39 on Sat 28 Mar, so only Saturday’s madhyahna (11:05–13:29) falls within it. Every reading takes that day.

Rama Navami: every date in Ipameri

The Moon gains on the Sun about 12° a day. Each 12° of lead is one tithi: 96°–108° is the 9th, Shukla Navami. A day takes the tithi in force at its sunrise, 06:18 here. Ashtami ended at 17:11 Fri, before it. Navami ends at 18:39, when the lead reaches 108°. The lead passed 0° at the new moon of 20 Mar, so the Moon is waxing: Shukla paksha.

The night of Fri 27 Mar ran from sunset 18:18 Fri to sunrise 06:18, 12 h 0 m. Cut into 15 muhurtas of 48 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 06:18 to 18:17, 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, 18:17 to 06:18 Sun, 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′. Punarvasu spans 80°00′–93°20′; the Moon entered its pada 2 at 83°20′. It leaves at 21:39, for Pushya.

Add the Sun's and the Moon's places among the stars: 343.3° + 85.5° = 428.8°, one full turn and 68.8°. Past the turn, cut into 27 parts of 13°20′, it gives the yoga: 66°40′–80°00′ is the 6th, Atiganda. It ends at 02:38 Sun, then Sukarma.

A karana is half a tithi: 6° of the Moon's lead, so the first half of Navami is Balava and the second Kaulava. Balava ended at 05:51, when the lead reached 102°; Kaulava runs until 18:39.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 06:18 to 06:18 Sun, so the hours after midnight still belong to Shaniwara.

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: Meena gives Chaitra. The Sun enters Mesha on 14 Apr, inside the month. The next new moon, 18 Apr, finds it in Mesha and begins Vaishakha.

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 20 Mar, with the Sun in Meena, began Chaitra. This Shukla paksha reads Chaitra in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 20 Mar 2015, 06:36 Fri. Since then the Sun has moved 7.9° round the stars. Vikram Samvat numbers that year 2072; Shaka Samvat numbers it 1937.