Ruling · Gopāṣṭamī (Goṣṭhāṣṭamī) · 2090

Monday 30 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 641 minutes.

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 Monday 30 October

Taken. The only midday Aṣṭamī reaches.

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

48 of 48 minutes covered

Midday of Tuesday 31 October

Aṣṭamī is absent from madhyāhna. Not taken.

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

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 23:26 on Sun 29 Oct to 00:57 on Tue 31 Oct.

    2090-10-29T15:26:04Z → 2090-10-30T16:56:56Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 30th, 11:38–12:26 on the 31st.

    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 30th and 0 of 48 on the 31st.

    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 38450 s

  5. 05

    Ruling

    Gopāṣṭamī, Baoding, 2090: Monday 30 October.

    confidence: determinate

Say it like this

In Baoding, Gopāṣṭamī 2090 falls on Monday 30 October. Aṣṭamī runs from 23:26 on Sun 29 Oct to 00:57 on Tue 31 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2090/gopashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 30 Oct
compat-drikpanchangComparison profileMon 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 Angeles08:26 → 09:5712:1348 min12:130 min29 Oct
Chicago10:26 → 11:5712:1048 min12:100 min29 Oct
Jersey City11:26 → 12:5712:1648 min12:1641 min29 Oct
Port of Spain11:26 → 12:5711:2648 min11:2648 min30 Oct
London15:26 → 16:5711:200 min11:2048 min30 Oct
Durban17:26 → 18:5711:160 min11:1648 min30 Oct
Dubai19:26 → 20:5711:390 min11:3948 min30 Oct
Delhi20:56 → 22:2711:410 min11:4148 min30 Oct
Kolkata20:56 → 22:2710:560 min10:5648 min30 Oct
Singapore23:26 → 00:5712:250 min12:2548 min30 Oct
Sydney02:26 → 03:5712:150 min12:1548 min30 Oct
Suva03:26 → 04:5711:260 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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