Ruling · Mahāṣṭamī (Durgāṣṭamī) · 1963

Thursday 26 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 465 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Wednesday 25 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:08  11:56 madhyāhna ends
10:2010:4411:0811:3211:5612:2012:44

0 of 48 minutes covered

Midday of Thursday 26 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:07  11:55 madhyāhna ends
10:1910:4311:0711:3111:5512:1912:43

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 19:40 on Wed 25 Sep to 21:28 on Thu 26 Sep.

    1963-09-25T11:40:20Z → 1963-09-26T13:27:30Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:08–11:56 on the 25th, 11:07–11:55 on the 26th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.

    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: paraviddha → only-day · margin 27884 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1963: Thursday 26 September.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1963 falls on Thursday 26 September. Aṣṭamī runs from 19:40 on Wed 25 Sep to 21:28 on Thu 26 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1963/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 26 Sep
compat-drikpanchangComparison profileThu 26 Sep
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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles04:40 → 06:2812:2048 min12:200 min25 Sep
Chicago06:40 → 08:2812:1848 min12:180 min25 Sep
Jersey City07:40 → 09:2812:2448 min12:230 min25 Sep
Port of Spain07:40 → 09:2811:3448 min11:330 min25 Sep
London12:40 → 14:2812:2836 min12:2848 min26 Sep
Durban13:40 → 15:2811:240 min11:2448 min26 Sep
Dubai15:40 → 17:2811:470 min11:4648 min26 Sep
Delhi17:10 → 18:5811:490 min11:4848 min26 Sep
Kolkata17:10 → 18:5811:040 min11:0448 min26 Sep
Singapore19:10 → 20:5812:030 min12:0248 min26 Sep
Sydney21:40 → 23:2811:230 min11:2348 min26 Sep
Suva23:40 → 01:2811:340 min11:3448 min26 Sep
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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