Ruling · Jitāṣṭamī (Jitiya) · 2066

Saturday 11 September

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 526 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 10 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:19 sunsetpradoṣa ends 19:50
17:5518:1918:4319:0719:3119:5520:19

0 of 91 minutes covered

Evening of Saturday 11 September

Taken. The only evening Aṣṭamī reaches.

18:17 sunsetpradoṣa ends 19:49
17:5318:1718:4119:0519:2919:5320:17

92 of 92 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 04:36 on Sat 11 Sep to 07:03 on Sun 12 Sep.

    2066-09-11T01:06:15Z → 2066-09-12T03:32:30Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:19–19:50 on the 10th, 18:17–19:49 on the 11th.

    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 91 minutes on the 10th and 92 of 92 on the 11th.

    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 31574 s

  5. 05

    Ruling

    Jitāṣṭamī, Tehran, 2066: Saturday 11 September.

    confidence: determinate

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 2066 falls on Saturday 11 September. Aṣṭamī runs from 04:36 on Sat 11 Sep to 07:03 on Sun 12 Sep and covers all of pradoṣa that evening.

ahargana.org/tehran/festivals/2066/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 11 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 11 Sep
compat-drikpanchangComparison profileSat 11 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 11thCoveredSunset 12thCoveredRuled
Los Angeles18:06 → 20:3319:0488 min19:030 min10 Sep
Chicago20:06 → 22:3319:0691 min19:040 min11 Sep
Jersey City21:06 → 23:3319:1191 min19:100 min11 Sep
Port of Spain21:06 → 23:3318:0994 min18:080 min11 Sep
London02:06 → 04:3319:2389 min19:210 min11 Sep
Durban03:06 → 05:3317:4698 min17:470 min11 Sep
Dubai05:06 → 07:3318:2793 min18:260 min11 Sep
Delhi06:36 → 09:0318:3193 min18:300 min11 Sep
Kolkata06:36 → 09:0317:4493 min17:430 min11 Sep
Singapore09:06 → 11:3319:0595 min19:040 min11 Sep
Sydney11:06 → 13:3317:4498 min17:450 min11 Sep
Suva13:06 → 15:3318:0197 min18:010 min11 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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