Ruling · Jitāṣṭamī (Jitiya) · 1965

Saturday 18 September

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 416 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 Friday 17 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:09 sunsetpradoṣa ends 19:42
17:4518:0918:3318:5719:2119:4520:09

0 of 93 minutes covered

Evening of Saturday 18 September

Taken. The only evening Aṣṭamī reaches.

18:07 sunsetpradoṣa ends 19:41
17:4318:0718:3118:5519:1919:4320:07

94 of 94 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 04:12 on Sat 18 Sep to 02:37 on Sun 19 Sep.

    1965-09-18T00:42:03Z → 1965-09-18T23:06:56Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:09–19:42 on the 17th, 18:07–19:41 on the 18th.

    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 17th and 94 of 94 on the 18th.

    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 24949 s

  5. 05

    Ruling

    Jitāṣṭamī, Tehran, 1965: Saturday 18 September.

    confidence: determinate

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 1965 falls on Saturday 18 September. Aṣṭamī runs from 04:12 on Sat 18 Sep to 02:37 on Sun 19 Sep and covers all of pradoṣa that evening.

ahargana.org/tehran/festivals/1965/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 18 Sep
compat-drikpanchangComparison profileSat 18 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 18thCoveredSunset 19thCoveredRuled
Los Angeles17:42 → 16:0718:550 min18:540 min17 Sep
Chicago19:42 → 18:0718:550 min18:530 min17 Sep
Jersey City20:42 → 19:0719:007 min18:580 min18 Sep
Port of Spain20:42 → 19:0718:0562 min18:040 min18 Sep
London01:42 → 00:0719:0892 min19:060 min18 Sep
Durban02:42 → 01:0717:4996 min17:500 min18 Sep
Dubai04:42 → 03:0718:2094 min18:190 min18 Sep
Delhi06:12 → 04:3718:2394 min18:220 min18 Sep
Kolkata06:12 → 04:3717:3794 min17:360 min18 Sep
Singapore08:12 → 06:3718:3295 min18:320 min18 Sep
Sydney10:42 → 09:0717:4896 min17:490 min18 Sep
Suva12:42 → 11:0718:0196 min18:010 min18 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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