Ruling · Jitāṣṭamī (Jitiya) · 1915

Friday 1 October

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 273 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 30 September

Aṣṭamī is absent from pradoṣa. Not taken.

17:46 sunsetpradoṣa ends 19:23
17:2217:4618:1018:3418:5819:2219:46

0 of 97 minutes covered

Evening of Friday 1 October

Taken. The only evening Aṣṭamī reaches.

17:45 sunsetpradoṣa ends 19:22
17:2117:4518:0918:3318:5719:2119:45

97 of 97 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 23:56 on Thu 30 Sep to 02:17 on Sat 2 Oct.

    1915-09-30T20:31:29Z → 1915-10-01T22:52:02Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:46–19:23 on the 30th, 17:45–19:22 on the 1st.

    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 97 minutes on the 30th and 97 of 97 on the 1st.

    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 16400 s

  5. 05

    Ruling

    Jitāṣṭamī, Tehran, 1915: Friday 1 October.

    confidence: determinate

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 1915 falls on Friday 1 October. Aṣṭamī runs from 23:56 on Thu 30 Sep to 02:17 on Sat 2 Oct and covers all of pradoṣa that evening.

ahargana.org/tehran/festivals/1915/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 1 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 1 Oct
compat-drikpanchangComparison profileFri 1 Oct
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 30thCoveredSunset 1stCoveredRuled
Los Angeles12:31 → 14:5217:4097 min17:380 min30 Sep
Chicago14:31 → 16:5217:3598 min17:340 min30 Sep
Jersey City15:31 → 17:5217:4197 min17:4012 min30 Sep
Port of Spain16:31 → 18:5217:5796 min17:5755 min30 Sep
London20:31 → 22:5217:430 min17:4199 min1 Oct
Durban22:31 → 00:5217:560 min17:5693 min1 Oct
Dubai00:12 → 02:3317:490 min17:4897 min1 Oct
Delhi02:01 → 04:2218:090 min18:0897 min1 Oct
Kolkata02:01 → 04:2217:260 min17:2596 min1 Oct
Singapore03:31 → 05:5217:580 min17:5795 min1 Oct
Sydney06:31 → 08:5217:560 min17:5693 min1 Oct
Suva08:26 → 10:4717:580 min17:5894 min1 Oct
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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