Jitāṣṭamī

1. १Step 1, Aṅga

   Aṣṭamī runs from 20:24 on Wed 20 Sep to 18:29 on Thu 21 Sep.

   2000-09-20T14:24:19Z → 2000-09-21T12:28:52Z
2. २Step 2, Kāla

   Pradoṣa is 2 muhūrtas after sunset: 18:37–20:12 on the 20th, 18:37–20:12 on the 21st.

   pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′
3. ३Step 3, Rule

   Aṣṭamī must be present during pradoṣa. It covers 0 of 95 minutes on the 20th and 0 of 95 on the 21st.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
4. ४Step 4, Tie-break

   Neither evening qualifies, and the source does not say what then. The day the tithi falls on is taken, as a boundary.

   no day qualifies → tithi-day, the ruleset's fallback · margin 481 s
5. ५Step 5, Ruling

   Jitāṣṭamī, Colombo, 2000: Wednesday 20 September.

   confidence: boundary (absent-unstated)

In Colombo, Jitāṣṭamī (Jitiya) 2000 falls on Wednesday 20 September. Aṣṭamī runs from 20:24 on Wed 20 Sep to 18:29 on Thu 21 Sep, and reaches pradoṣa on neither day. The rule does not say what then; the day Aṣṭamī falls on is taken. The rule does not settle this date cleanly.

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

Month

Bhādrapada, amānta

Pakṣa · aṅga

Kṛṣṇa · Aṣṭamī

Kāla

Pradoṣa

Priority

Unstated

Tie-break

Longer coverage, as a boundary

Reference

CRC 1955, p. 103

K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.