Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2010

Saturday 13 November

Boundaryin Baoding, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.

Decide it for

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 Saturday 13 November

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

madhyāhna begins 11:38  12:26 madhyāhna ends
Aṣṭamī begins 11:30:29
10:5011:1411:3812:0212:2612:5013:14

48 of 48 minutes covered

Midday of Sunday 14 November

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

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 11:30 on Sat 13 Nov to 13:51 on Sun 14 Nov.

    2010-11-13T03:30:30Z → 2010-11-14T05:51:16Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 13th, 11:38–12:26 on the 14th.

    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 13th and 48 of 48 on the 14th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 461 s

  5. 05

    Ruling

    Gopāṣṭamī, Baoding, 2010: Saturday 13 November.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Gopāṣṭamī 2010 falls on Saturday 13 November. Aṣṭamī runs from 11:30 on Sat 13 Nov to 13:51 on Sun 14 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/2010/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 13 Nov
compat-drikpanchangComparison profileSun 14 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles19:30 → 21:5111:1348 min11:130 min13 Nov
Chicago21:30 → 23:5111:1148 min11:110 min13 Nov
Jersey City22:30 → 00:5111:1648 min11:170 min13 Nov
Port of Spain23:30 → 01:5111:2648 min11:260 min13 Nov
London03:30 → 05:5111:2048 min11:210 min13 Nov
Durban05:30 → 07:5111:1648 min11:160 min13 Nov
Dubai07:30 → 09:5111:3948 min11:390 min13 Nov
Delhi09:00 → 11:2111:4148 min11:410 min13 Nov
Kolkata09:00 → 11:2110:5748 min10:5724 min13 Nov
Singapore11:30 → 13:5112:2548 min12:2548 min13 Nov
Sydney14:30 → 16:5112:160 min12:1648 min14 Nov
Suva16:30 → 18:5112:270 min12:2748 min14 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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