Ruling · Mahāṣṭamī (Durga Ashtami) · 1992

Sunday 4 October

Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 3 min 16 s away. Say “contested”.

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 Saturday 3 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:05  11:53 madhyāhna ends
10:1710:4111:0511:2911:5312:1712:41

48 of 48 minutes covered

Midday of Sunday 4 October

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:04  11:52 madhyāhna ends
Aṣṭamī ends 11:07:36
10:1610:4011:0411:2811:5212:1612:40

3 of 48 minutes covered, the first 3

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 09:25 on Sat 3 Oct to 11:08 on Sun 4 Oct.

    1992-10-03T01:25:11Z → 1992-10-04T03:07:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 3rd, 11:04–11:52 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 48 of 48 minutes on the 3rd and 3 of 48 on the 4th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 196 s < 300 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1992: Sunday 4 October.

    confidence: boundary (margin)

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1992 falls on Sunday 4 October. Aṣṭamī runs from 09:25 on Sat 3 Oct to 11:08 on Sun 4 Oct and covers 3 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 3 min 16 s from a threshold: treat the date as contested.

ahargana.org/daqing/festivals/1992/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 4 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 4 Oct
compat-drikpanchangComparison profileSun 4 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/mahashtami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 8 Mahastami (paraviddha)” 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 Angeles18:25 → 20:0812:1848 min12:170 min3 Oct
Chicago20:25 → 22:0812:1548 min12:150 min3 Oct
Jersey City21:25 → 23:0812:2148 min12:210 min3 Oct
Port of Spain21:25 → 23:0811:3148 min11:310 min3 Oct
London02:25 → 04:0812:2548 min12:250 min3 Oct
Durban03:25 → 05:0811:2148 min11:210 min3 Oct
Dubai05:25 → 07:0811:4448 min11:430 min3 Oct
Delhi06:55 → 08:3811:4648 min11:460 min3 Oct
Kolkata06:55 → 08:3811:0148 min11:010 min3 Oct
Singapore09:25 → 11:0812:3048 min12:290 min3 Oct
Sydney11:25 → 13:0811:2143 min11:2048 min4 Oct
Suva13:25 → 15:0811:320 min11:3148 min4 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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