Ruling · Gopāṣṭamī · 2040

Sunday 11 November

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 206 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 Sunday 11 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:24  12:12 madhyāhna ends
10:3611:0011:2411:4812:1212:3613:00

48 of 48 minutes covered

Midday of Monday 12 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:24  12:12 madhyāhna ends
10:3611:0011:2411:4812:1212:3613:00

0 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 07:58 on Sun 11 Nov to 05:51 on Mon 12 Nov.

    2040-11-11T04:28:17Z → 2040-11-12T02:20:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 11th, 11:24–12:12 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 48 of 48 minutes on the 11th and 0 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 12356 s

  5. 05

    Ruling

    Gopāṣṭamī, Tehran, 2040: Sunday 11 November.

    confidence: determinate

Say it like this

In Tehran, Gopāṣṭamī 2040 falls on Sunday 11 November. Aṣṭamī runs from 07:58 on Sun 11 Nov to 05:51 on Mon 12 Nov and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2040/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 11 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 11 Nov
compat-drikpanchangComparison profileSun 11 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 Angeles20:28 → 18:2111:1348 min11:130 min11 Nov
Chicago22:28 → 20:2111:1148 min11:110 min11 Nov
Jersey City23:28 → 21:2111:1648 min11:160 min11 Nov
Port of Spain00:28 → 22:2111:2648 min11:260 min11 Nov
London04:28 → 02:2111:2048 min11:200 min11 Nov
Durban06:28 → 04:2111:1648 min11:160 min11 Nov
Dubai08:28 → 06:2111:3948 min11:390 min11 Nov
Delhi09:58 → 07:5111:4148 min11:410 min11 Nov
Kolkata09:58 → 07:5110:5748 min10:570 min11 Nov
Singapore12:28 → 10:2112:2544 min12:250 min11 Nov
Sydney15:28 → 13:2112:150 min12:1648 min12 Nov
Suva16:28 → 14:2111:260 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

About Ahargaṇa