Ruling · Gopāṣṭamī · 2087

Tuesday 4 November

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

Decide it for

35°52′ N 128°36′ E · Asia/Seoul · GeoNames 1835329

The two middays

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

Midday of Monday 3 November

Qualifies with 4 of 48 minutes. Not taken.

madhyāhna begins 11:45  12:33 madhyāhna ends
Aṣṭamī begins 12:28:43
10:5711:2111:4512:0912:3312:5713:21

4 of 48 minutes covered, the last 4

Midday of Tuesday 4 November

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

madhyāhna begins 11:45  12:33 madhyāhna ends
Aṣṭamī ends 13:00:00
10:5711:2111:4512:0912:3312:5713:21

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 12:29 on Mon 3 Nov to 13:00 on Tue 4 Nov.

    2087-11-03T03:28:44Z → 2087-11-04T04:00:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 3rd, 11:45–12:33 on the 4th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 4 of 48 minutes on the 3rd and 48 of 48 on the 4th.

    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 267 s < 300 s

  5. 05

    Ruling

    Gopāṣṭamī, Daegu, 2087: Tuesday 4 November.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Daegu, Gopāṣṭamī 2087 falls on Tuesday 4 November. Aṣṭamī runs from 12:29 on Mon 3 Nov to 13:00 on Tue 4 Nov and covers all of madhyāhna that midday. It also reaches the previous midday for 4 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 27 s from a threshold: treat the date as contested.

ahargana.org/daegu/festivals/2087/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 4 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 4 Nov
compat-drikpanchangComparison profileTue 4 Nov
No institution has a recorded ruling for Daegu.

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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles19:29 → 20:0011:1348 min11:130 min3 Nov
Chicago21:29 → 22:0011:1048 min11:100 min3 Nov
Jersey City22:29 → 23:0011:1648 min11:160 min3 Nov
Port of Spain23:29 → 00:0011:2648 min11:260 min3 Nov
London03:29 → 04:0011:2048 min11:200 min3 Nov
Durban05:29 → 06:0011:1648 min11:160 min3 Nov
Dubai07:29 → 08:0011:3848 min11:380 min3 Nov
Delhi08:59 → 09:3011:4148 min11:410 min3 Nov
Kolkata08:59 → 09:3010:5648 min10:560 min3 Nov
Singapore11:29 → 12:0012:2448 min12:240 min3 Nov
Sydney14:29 → 15:0012:150 min12:1548 min4 Nov
Suva15:29 → 16:0011:260 min11:2648 min4 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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