Ruling · Jitāṣṭamī (Jitiya) · 1979

Thursday 13 September

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 279 minutes.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Wednesday 12 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:00 sunsetpradoṣa ends 19:33
17:3618:0018:2418:4819:1219:3620:00

0 of 93 minutes covered

Evening of Thursday 13 September

Taken. The only evening Aṣṭamī reaches.

17:59 sunsetpradoṣa ends 19:32
17:3517:5918:2318:4719:1119:3519:59

93 of 93 minutes covered

Aṣṭamī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 00:11 on Thu 13 Sep to 00:31 on Fri 14 Sep.

    1979-09-12T18:11:28Z → 1979-09-13T18:30:58Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:00–19:33 on the 12th, 17:59–19:32 on the 13th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 0 of 93 minutes on the 12th and 93 of 93 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 16719 s

  5. 05

    Ruling

    Jitāṣṭamī, Chattogram, 1979: Thursday 13 September.

    confidence: determinate

Say it like this

In Chattogram, Jitāṣṭamī (Jitiya) 1979 falls on Thursday 13 September. Aṣṭamī runs from 00:11 on Thu 13 Sep to 00:31 on Fri 14 Sep and covers all of pradoṣa that evening.

ahargana.org/chattogram/festivals/1979/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 13 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 13 Sep
compat-drikpanchangComparison profileThu 13 Sep
No institution has a recorded ruling for Chattogram.

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

The rule, as data

/rules/jitashtami · ruleset 2026.3-draft

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.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīSunset 12thCoveredSunset 13thCoveredRuled
Los Angeles11:11 → 11:3119:0492 min19:030 min12 Sep
Chicago13:11 → 13:3119:0691 min19:040 min12 Sep
Jersey City14:11 → 14:3119:1191 min19:090 min12 Sep
Port of Spain14:11 → 14:3118:0994 min18:080 min12 Sep
London19:11 → 19:3119:2389 min19:2110 min12 Sep
Durban20:11 → 20:3117:460 min17:4797 min13 Sep
Dubai22:11 → 22:3118:270 min18:2693 min13 Sep
Delhi23:41 → 00:0118:300 min18:2993 min13 Sep
Kolkata23:41 → 00:0117:440 min17:4393 min13 Sep
Singapore01:41 → 02:0118:350 min18:3495 min13 Sep
Sydney04:11 → 04:3117:440 min17:4498 min13 Sep
Suva06:11 → 06:3118:000 min18:0096 min13 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
jitashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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