Ruling · Gopāṣṭamī · 1950

Thursday 16 November

Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 0 min 35 s away. Say “contested”.

Decide it for

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 16 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:00  11:48 madhyāhna ends
Aṣṭamī begins 11:23:18
10:1210:3611:0011:2411:4812:1212:36

25 of 48 minutes covered, the last 25

Midday of Friday 17 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:01  11:49 madhyāhna ends
Aṣṭamī ends 11:00:02
10:1310:3711:0111:2511:4912:1312:37

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 11:23 on Thu 16 Nov to 11:00 on Fri 17 Nov.

    1950-11-16T03:23:19Z → 1950-11-17T03:00:03Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 16th, 11:01–11:49 on the 17th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 25 of 48 minutes on the 16th and 0 of 48 on the 17th.

    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 35 s < 300 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 1950: Thursday 16 November.

    confidence: boundary (margin)

Say it like this

In Daqing, Gopāṣṭamī 1950 falls on Thursday 16 November. Aṣṭamī runs from 11:23 on Thu 16 Nov to 11:00 on Fri 17 Nov and covers 25 of 48 minutes of madhyāhna that midday. It is 0 min 35 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/1950/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 16 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 16 Nov
compat-drikpanchangComparison profileThu 16 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles19:23 → 19:0011:1448 min11:140 min16 Nov
Chicago21:23 → 21:0011:1148 min11:110 min16 Nov
Jersey City22:23 → 22:0011:1748 min11:170 min16 Nov
Port of Spain23:23 → 23:0011:2748 min11:270 min16 Nov
London03:23 → 03:0011:2148 min11:210 min16 Nov
Durban05:23 → 05:0011:1748 min11:170 min16 Nov
Dubai07:23 → 07:0011:3948 min11:400 min16 Nov
Delhi08:53 → 08:3011:4248 min11:420 min16 Nov
Kolkata08:53 → 08:3010:5748 min10:570 min16 Nov
Singapore10:53 → 10:3011:5548 min11:550 min16 Nov
Sydney13:23 → 13:0011:160 min11:1648 min17 Nov
Suva15:23 → 15:0011:270 min11:2748 min17 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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