Ruling · Gopāṣṭamī · 1900

Wednesday 31 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 371 minutes.

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 Wednesday 31 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:04  11:52 madhyāhna ends
10:1610:4011:0411:2811:5212:1612:40

48 of 48 minutes covered

Midday of Thursday 1 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:04  11:52 madhyāhna ends
10:1610:4011:0411:2811:5212:1612:40

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 04:53 on Wed 31 Oct to 03:42 on Thu 1 Nov.

    1900-10-30T20:48:03Z → 1900-10-31T19:37:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 31st, 11:04–11:52 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 22282 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 1900: Wednesday 31 October.

    confidence: determinate

Say it like this

In Daqing, Gopāṣṭamī 1900 falls on Wednesday 31 October. Aṣṭamī runs from 04:53 on Wed 31 Oct to 03:42 on Thu 1 Nov and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1900/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 31 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 31 Oct
compat-drikpanchangComparison profileWed 31 Oct
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles12:48 → 11:3711:130 min11:1225 min31 Oct
Chicago14:48 → 13:3711:100 min11:1048 min31 Oct
Jersey City15:48 → 14:3711:160 min11:1648 min31 Oct
Port of Spain16:48 → 15:3711:260 min11:2648 min31 Oct
London20:48 → 19:3711:200 min11:2048 min31 Oct
Durban22:18 → 21:0710:460 min10:4648 min31 Oct
Dubai00:29 → 23:1811:190 min11:1948 min31 Oct
Delhi02:09 → 00:5811:320 min11:3248 min31 Oct
Kolkata02:09 → 00:5810:470 min10:4748 min31 Oct
Singapore03:43 → 02:3211:190 min11:1948 min31 Oct
Sydney06:48 → 05:3711:150 min11:1548 min31 Oct
Suva08:43 → 07:3211:210 min11:2148 min31 Oct
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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