Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2033

Monday 31 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 594 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Monday 31 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 10:59  11:47 madhyāhna ends
10:1110:3510:5911:2311:4712:1112:35

48 of 48 minutes covered

Midday of Tuesday 1 November

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 10:59  11:47 madhyāhna ends
10:1110:3510:5911:2311:4712:1112:35

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 01:05 on Mon 31 Oct to 00:18 on Tue 1 Nov.

    2033-10-30T17:04:53Z → 2033-10-31T16:18:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 10:59–11:47 on the 31st, 10:59–11:47 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 35665 s

  5. 05

    Ruling

    Gopāṣṭamī, Daqing, 2033: Monday 31 October.

    confidence: determinate

Say it like this

In Daqing, Gopāṣṭamī 2033 falls on Monday 31 October. Aṣṭamī runs from 01:05 on Mon 31 Oct to 00:18 on Tue 1 Nov and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2033/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 31 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 31 Oct
compat-drikpanchangComparison profileMon 31 Oct
No institution has a recorded ruling for Daqing.

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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles10:05 → 09:1812:1248 min12:120 min30 Oct
Chicago12:05 → 11:1812:1048 min12:100 min30 Oct
Jersey City13:05 → 12:1812:160 min12:162 min31 Oct
Port of Spain13:05 → 12:1811:260 min11:2648 min31 Oct
London17:05 → 16:1811:200 min11:2048 min31 Oct
Durban19:05 → 18:1811:160 min11:1648 min31 Oct
Dubai21:05 → 20:1811:380 min11:3848 min31 Oct
Delhi22:35 → 21:4811:410 min11:4148 min31 Oct
Kolkata22:35 → 21:4810:560 min10:5648 min31 Oct
Singapore01:05 → 00:1812:240 min12:2448 min31 Oct
Sydney04:05 → 03:1812:150 min12:1548 min31 Oct
Suva05:05 → 04:1811:260 min11:2648 min31 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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