Panchang in Codcod, Western Visayas, Philippines Tue 16 May 1978

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, 05:25 here. Ashtami ended at 04:29, before it. Navami ends at 05:42 Wed, when the lead reaches 108°. The lead passed 0° at the new moon of 7 May, so the Moon is waxing: Shukla paksha.

A day takes the tithi in force at its sunrise. Navami began at 04:29, before sunrise at 05:25, and ends at 05:42 Wed, after the next sunrise at 05:25 Wed. Both days read Navami: it is a vriddhi tithi here.

The night of Mon 15 May ran from sunset 18:01 Mon to sunrise 05:25, 11 h 24 m. Cut into 15 muhurtas of 45 m, its 14th is Brahma Muhurta, the one before the last.

Daylight here, 05:25 to 18:01, splits into 8 choghadiyas of 1 h 34 m. Their names follow a fixed order that starts from the weekday, and each name is counted good, neutral or bad.

The night here, 18:01 to 05:25 Wed, splits into 8 choghadiyas of 1 h 25 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′. Magha spans 120°00′–133°20′; the Moon entered its pada 3 at 126°40′. It leaves at 16:41, for Purva Phalguni.

Add the Sun's and the Moon's places among the stars: 31.1° + 127.6° = 158.7°. The sum, cut into 27 parts of 13°20′, gives the yoga: 146°40′–160°00′ is the 12th, Dhruva. It ends at 07:49, then Vyaghata.

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 runs until 17:11, when the lead reaches 102°; Kaulava until 05:42 Wed.

A Hindu day runs from one sunrise to the next, not midnight to midnight. This one runs 05:25 to 05:25 Wed, so the hours after midnight still belong to Mangalawara.

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: Mesha gives Vaishakha. The Sun enters Vrishabha on 15 May, inside the month. The next new moon, 6 Jun, finds it in Vrishabha and begins Jyeshtha.

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 7 May, with the Sun in Mesha, began Vaishakha. This Shukla paksha reads Vaishakha in both counts.

A samvat year begins with Chaitra, the month whose new moon finds the Sun in Meena: 7 Apr 1978, 23:15 Fri. Since then the Sun has moved 37.2° round the stars. Vikram Samvat numbers that year 2035; Shaka Samvat numbers it 1900.