Mahāṣṭamī

1. १Step 1, Aṅga

   Aṣṭamī runs from 13:18 on Tue 12 Oct to 11:38 on Wed 13 Oct.

   2021-10-12T16:18:03Z → 2021-10-13T14:38:14Z
2. २Step 2, Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 12th, 12:03–12:51 on the 13th.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
3. ३Step 3, Rule

   Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 12th and 0 of 48 on the 13th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
4. ४Step 4, Tie-break

   Neither midday qualifies. The source says what then (p. 101): the second day.

   no day qualifies → second-day, stated: Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 101 · margin 1473 s
5. ५Step 5, Ruling

   Mahāṣṭamī, Paramaribo, 2021: Wednesday 13 October.

   confidence: determinate

In Paramaribo, Mahāṣṭamī (Durga Ashtami) 2021 falls on Wednesday 13 October. Aṣṭamī runs from 13:18 on Tue 12 Oct to 11:38 on Wed 13 Oct, and reaches madhyāhna on neither day. For that case the source takes the second day (Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 101).

Institutional rulings are recorded with a source address, and are never edited to agree.

Month

Āśvina, amānta

Pakṣa · aṅga

Śukla · Aṣṭamī

Kāla

Madhyāhna

Priority

Paraviddhā

Tie-break

Second day

Reference

CRC 1955, p. 104

S 8 Mahastami (paraviddha) Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

Here noon or madhyahna relates to the period of time from 24 minutes (one ghatika) before mid-day upto the same time after it. This is the most appropriate time. If this time is not covered by the tithi on any day, the festival is to be observed on the succeeding day of the tithi. Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 101.