Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2021

Thursday 11 November

Determinatein Xining, under the Rashtriya Panchang method. Clear of every threshold by 193 minutes.

Decide it for

XiningDelhiKolkataSingaporeSydneyJersey City

36°38′ N 101°45′ E · Asia/Shanghai · GeoNames 1788852

The two middays

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

Midday of Thursday 11 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 12:33  13:21 madhyāhna ends
11:4512:0912:3312:5713:2113:4514:09

48 of 48 minutes covered

Midday of Friday 12 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:33  13:21 madhyāhna ends
11:4512:0912:3312:5713:2113:4514:09

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 09:20 on Thu 11 Nov to 08:22 on Fri 12 Nov.

    2021-11-11T01:19:56Z → 2021-11-12T00:21:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:33–13:21 on the 11th, 12:33–13:21 on the 12th.

    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 11th and 0 of 48 on the 12th.

    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 11571 s

  5. 05

    Ruling

    Gopāṣṭamī, Xining, 2021: Thursday 11 November.

    confidence: determinate

Say it like this

In Xining, Gopāṣṭamī 2021 falls on Thursday 11 November. Aṣṭamī runs from 09:20 on Thu 11 Nov to 08:22 on Fri 12 Nov and covers all of madhyāhna that midday.

ahargana.org/xining/festivals/2021/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 11 Nov
compat-drikpanchangComparison profileThu 11 Nov
No institution has a recorded ruling for Xining.

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 12thCoveredRuled
Los Angeles17:20 → 16:2211:1348 min11:130 min11 Nov
Chicago19:20 → 18:2211:1048 min11:110 min11 Nov
Jersey City20:20 → 19:2211:1648 min11:160 min11 Nov
Port of Spain21:20 → 20:2211:2648 min11:260 min11 Nov
London01:20 → 00:2211:2048 min11:200 min11 Nov
Durban03:20 → 02:2211:1648 min11:160 min11 Nov
Dubai05:20 → 04:2211:3948 min11:390 min11 Nov
Delhi06:50 → 05:5211:4148 min11:410 min11 Nov
Kolkata06:50 → 05:5210:5648 min10:570 min11 Nov
Singapore09:20 → 08:2212:2548 min12:250 min11 Nov
Sydney12:20 → 11:2212:1543 min12:160 min11 Nov
Suva13:20 → 12:2211:260 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