Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2080

Tuesday 19 November

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 3 min 20 s away. Say “contested”.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Tuesday 19 November

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

48 of 48 minutes covered

Midday of Wednesday 20 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
Aṣṭamī ends 11:36:31
10:5211:1611:4012:0412:2812:5213:16

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 09:03 on Tue 19 Nov to 11:37 on Wed 20 Nov.

    2080-11-19T01:02:37Z → 2080-11-20T03:36:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 19th, 11:40–12:28 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 48 of 48 minutes on the 19th and 0 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 200 s < 300 s

  5. 05

    Ruling

    Gopāṣṭamī, Baoding, 2080: Tuesday 19 November.

    confidence: boundary (margin)

Say it like this

In Baoding, Gopāṣṭamī 2080 falls on Tuesday 19 November. Aṣṭamī runs from 09:03 on Tue 19 Nov to 11:37 on Wed 20 Nov and covers all of madhyāhna that midday. It is 3 min 20 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2080/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 19 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 19 Nov
compat-drikpanchangComparison profileTue 19 Nov
No institution has a recorded ruling for Baoding.

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 Angeles17:03 → 19:3711:1548 min11:150 min19 Nov
Chicago19:03 → 21:3711:1248 min11:120 min19 Nov
Jersey City20:03 → 22:3711:1848 min11:180 min19 Nov
Port of Spain21:03 → 23:3711:2848 min11:280 min19 Nov
London01:03 → 03:3711:2248 min11:220 min19 Nov
Durban03:03 → 05:3711:1848 min11:180 min19 Nov
Dubai05:03 → 07:3711:4048 min11:410 min19 Nov
Delhi06:33 → 09:0711:4348 min11:430 min19 Nov
Kolkata06:33 → 09:0710:5848 min10:580 min19 Nov
Singapore09:03 → 11:3712:2648 min12:260 min19 Nov
Sydney12:03 → 14:3712:1748 min12:1748 min19 Nov
Suva13:03 → 15:3711:280 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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