Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2025

Thursday 30 October

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 Wednesday 29 October

Qualifies with 32 of 48 minutes. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
Aṣṭamī begins 11:53:40
10:5011:1411:3812:0212:2612:5013:14

32 of 48 minutes covered, the last 32

Midday of Thursday 30 October

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

madhyāhna begins 11:38  12:26 madhyāhna ends
Aṣṭamī ends 12:37:02
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 11:54 on Wed 29 Oct to 12:37 on Thu 30 Oct.

    2025-10-29T03:53:41Z → 2025-10-30T04:37:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 29th, 11:38–12:26 on the 30th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 32 of 48 minutes on the 29th and 48 of 48 on the 30th.

    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 688 s

  5. 05

    Ruling

    Gopāṣṭamī, Baoding, 2025: Thursday 30 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Gopāṣṭamī 2025 falls on Thursday 30 October. Aṣṭamī runs from 11:54 on Wed 29 Oct to 12:37 on Thu 30 Oct and covers all of madhyāhna that midday. It also reaches the previous midday for 32 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/2025/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 30 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 30 Oct
compat-drikpanchangComparison profileThu 30 Oct
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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles20:54 → 21:3712:1248 min12:120 min29 Oct
Chicago22:54 → 23:3712:1048 min12:100 min29 Oct
Jersey City23:54 → 00:3712:1648 min12:160 min29 Oct
Port of Spain23:54 → 00:3711:2648 min11:260 min29 Oct
London03:54 → 04:3711:2048 min11:200 min29 Oct
Durban05:54 → 06:3711:1648 min11:160 min29 Oct
Dubai07:54 → 08:3711:3848 min11:380 min29 Oct
Delhi09:24 → 10:0711:4148 min11:410 min29 Oct
Kolkata09:24 → 10:0710:5648 min10:560 min29 Oct
Singapore11:54 → 12:3712:2448 min12:2413 min29 Oct
Sydney14:54 → 15:3712:150 min12:1548 min30 Oct
Suva15:54 → 16:3711:260 min11:2648 min30 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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