Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 1966

Sunday 20 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 449 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 Saturday 19 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:01  11:49 madhyāhna ends
10:1310:3711:0111:2511:4912:1312:37

0 of 48 minutes covered

Midday of Sunday 20 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:01  11:49 madhyāhna ends
10:1310:3711:0111:2511:4912:1312:37

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 19:18 on Sat 19 Nov to 21:28 on Sun 20 Nov.

    1966-11-19T11:18:25Z → 1966-11-20T13:28:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 19th, 11:01–11:49 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 26962 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 1966: Sunday 20 November.

    confidence: determinate

Say it like this

In Daqing, Gopāṣṭamī 1966 falls on Sunday 20 November. Aṣṭamī runs from 19:18 on Sat 19 Nov to 21:28 on Sun 20 Nov and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1966/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 20 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 20 Nov
compat-drikpanchangComparison profileSun 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles03:18 → 05:2811:1448 min11:140 min19 Nov
Chicago05:18 → 07:2811:1248 min11:120 min19 Nov
Jersey City06:18 → 08:2811:1848 min11:180 min19 Nov
Port of Spain07:18 → 09:2811:2748 min11:280 min19 Nov
London11:18 → 13:2811:2248 min11:2248 min19 Nov
Durban13:18 → 15:2811:170 min11:1848 min20 Nov
Dubai15:18 → 17:2811:400 min11:4048 min20 Nov
Delhi16:48 → 18:5811:420 min11:4248 min20 Nov
Kolkata16:48 → 18:5810:580 min10:5848 min20 Nov
Singapore18:48 → 20:5811:560 min11:5648 min20 Nov
Sydney21:18 → 23:2811:170 min11:1748 min20 Nov
Suva23:18 → 01:2811:280 min11:2848 min20 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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