Ruling · Jitāṣṭamī (Jitiya) · 1905

Thursday 21 September

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 233 minutes.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two evenings

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

Evening of Thursday 21 September

Taken. The only evening Aṣṭamī reaches.

17:59 sunsetpradoṣa ends 19:33
17:3517:5918:2318:4719:1119:3519:59

94 of 94 minutes covered

Evening of Friday 22 September

Aṣṭamī is absent from pradoṣa. Not taken.

17:57 sunsetpradoṣa ends 19:32
17:3317:5718:2118:4519:0919:3319:57

0 of 95 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 13:02 on Thu 21 Sep to 14:05 on Fri 22 Sep.

    1905-09-21T09:36:57Z → 1905-09-22T10:39:45Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:59–19:33 on the 21st, 17:57–19:32 on the 22nd.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 94 of 94 minutes on the 21st and 0 of 95 on the 22nd.

    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 13950 s

  5. 05

    Ruling

    Jitāṣṭamī, Tehran, 1905: Thursday 21 September.

    confidence: determinate

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 1905 falls on Thursday 21 September. Aṣṭamī runs from 13:02 on Thu 21 Sep to 14:05 on Fri 22 Sep and covers all of pradoṣa that evening.

ahargana.org/tehran/festivals/1905/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 21 Sep
compat-drikpanchangComparison profileThu 21 Sep
No institution has a recorded ruling for Tehran.

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 21stCoveredSunset 22ndCoveredRuled
Los Angeles01:37 → 02:4017:5295 min17:500 min21 Sep
Chicago03:37 → 04:4017:5094 min17:490 min21 Sep
Jersey City04:37 → 05:4017:5694 min17:540 min21 Sep
Port of Spain05:37 → 06:4018:0395 min18:020 min21 Sep
London09:37 → 10:4018:0394 min18:000 min21 Sep
Durban11:37 → 12:4017:5195 min17:510 min21 Sep
Dubai13:18 → 14:2117:5895 min17:570 min21 Sep
Delhi14:58 → 16:0118:1195 min18:100 min21 Sep
Kolkata14:58 → 16:0117:2695 min17:250 min21 Sep
Singapore16:37 → 17:4018:0195 min18:010 min21 Sep
Sydney19:37 → 20:4017:500 min17:5095 min22 Sep
Suva21:32 → 22:3517:570 min17:5795 min22 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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