Ruling · Gopāṣṭamī · 2097

Tuesday 12 November

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 459 minutes.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Monday 11 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:25  12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01

0 of 48 minutes covered

Midday of Tuesday 12 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:25  12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 19:51 on Mon 11 Nov to 21:51 on Tue 12 Nov.

    2097-11-11T16:21:29Z → 2097-11-12T18:20:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 11th, 11:25–12:13 on the 12th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 27539 s

  5. 05

    Ruling

    Gopāṣṭamī, Tehran, 2097: Tuesday 12 November.

    confidence: determinate

Say it like this

In Tehran, Gopāṣṭamī 2097 falls on Tuesday 12 November. Aṣṭamī runs from 19:51 on Mon 11 Nov to 21:51 on Tue 12 Nov and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2097/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 12 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 12 Nov
compat-drikpanchangComparison profileTue 12 Nov
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/gopashtami · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 8 Gopastami, Gosthastami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles08:21 → 10:2111:1348 min11:130 min11 Nov
Chicago10:21 → 12:2111:1148 min11:1148 min11 Nov
Jersey City11:21 → 13:2111:1743 min11:1748 min12 Nov
Port of Spain12:21 → 14:2111:260 min11:2748 min12 Nov
London16:21 → 18:2111:210 min11:2148 min12 Nov
Durban18:21 → 20:2111:160 min11:1748 min12 Nov
Dubai20:21 → 22:2111:390 min11:3948 min12 Nov
Delhi21:51 → 23:5111:410 min11:4148 min12 Nov
Kolkata21:51 → 23:5110:570 min10:5748 min12 Nov
Singapore00:21 → 02:2112:250 min12:2548 min12 Nov
Sydney03:21 → 05:2112:160 min12:1648 min12 Nov
Suva04:21 → 06:2111:270 min11:2748 min12 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
gopashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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