Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 1964

Thursday 12 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 115 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Thursday 12 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

48 of 48 minutes covered

Midday of Friday 13 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

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 07:25 on Thu 12 Nov to 09:05 on Fri 13 Nov.

    1964-11-11T23:25:15Z → 1964-11-13T01:04:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 12th, 11:00–11:48 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 6910 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 1964: Thursday 12 November.

    confidence: determinate

Say it like this

In Daqing, Gopāṣṭamī 1964 falls on Thursday 12 November. Aṣṭamī runs from 07:25 on Thu 12 Nov to 09:05 on Fri 13 Nov and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1964/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 12 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 12 Nov
compat-drikpanchangComparison profileThu 12 Nov
No institution has a recorded ruling for Daqing.

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 13thCoveredRuled
Los Angeles15:25 → 17:0511:130 min11:130 min12 Nov
Chicago17:25 → 19:0511:100 min11:110 min12 Nov
Jersey City18:25 → 20:0511:160 min11:160 min12 Nov
Port of Spain19:25 → 21:0511:260 min11:260 min12 Nov
London23:25 → 01:0511:200 min11:210 min12 Nov
Durban01:25 → 03:0511:160 min11:160 min12 Nov
Dubai03:25 → 05:0511:390 min11:390 min12 Nov
Delhi04:55 → 06:3511:410 min11:410 min12 Nov
Kolkata04:55 → 06:3510:560 min10:570 min12 Nov
Singapore06:55 → 08:3511:550 min11:550 min12 Nov
Sydney09:25 → 11:0511:150 min11:160 min12 Nov
Suva11:25 → 13:0511:260 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