Ruling · Gopāṣṭamī · 2099

Friday 20 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 34 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 19 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:01  11:49 madhyāhna ends
Aṣṭamī begins 12:23:15
10:1310:3711:0111:2511:4912:1312:37

0 of 48 minutes covered

Midday of Friday 20 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:02  11:50 madhyāhna ends
10:1410:3811:0211:2611:5012:1412:38

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 12:23 on Thu 19 Nov to 14:24 on Fri 20 Nov.

    2099-11-19T04:23:16Z → 2099-11-20T06:23:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 19th, 11:02–11:50 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 2030 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 2099: Friday 20 November.

    confidence: determinate

Say it like this

In Daqing, Gopāṣṭamī 2099 falls on Friday 20 November. Aṣṭamī runs from 12:23 on Thu 19 Nov to 14:24 on Fri 20 Nov and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2099/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 20 Nov
compat-drikpanchangComparison profileFri 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 Angeles20:23 → 22:2411:1548 min11:150 min19 Nov
Chicago22:23 → 00:2411:1248 min11:120 min19 Nov
Jersey City23:23 → 01:2411:1848 min11:180 min19 Nov
Port of Spain00:23 → 02:2411:2848 min11:280 min19 Nov
London04:23 → 06:2411:2248 min11:220 min19 Nov
Durban06:23 → 08:2411:1848 min11:180 min19 Nov
Dubai08:23 → 10:2411:4048 min11:410 min19 Nov
Delhi09:53 → 11:5411:4348 min11:4311 min19 Nov
Kolkata09:53 → 11:5410:5848 min10:5848 min19 Nov
Singapore12:23 → 14:2412:2648 min12:2648 min19 Nov
Sydney15:23 → 17:2412:170 min12:1748 min20 Nov
Suva16:23 → 18:2411:280 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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