Ruling · Mahāṣṭamī (Durga Ashtami) · 1906

Tuesday 25 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 474 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 Tuesday 25 September

Taken. The only midday Aṣṭamī reaches.

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

48 of 48 minutes covered

Midday of Wednesday 26 September

Aṣṭamī is absent from madhyāhna. Not taken.

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

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 03:13 on Tue 25 Sep to 01:14 on Wed 26 Sep.

    1906-09-24T19:13:12Z → 1906-09-25T17:13:59Z

  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 48 of 48 minutes on the 25th and 0 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 28466 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1906: Tuesday 25 September.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1906 falls on Tuesday 25 September. Aṣṭamī runs from 03:13 on Tue 25 Sep to 01:14 on Wed 26 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1906/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 25 Sep
compat-drikpanchangComparison profileTue 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles11:13 → 09:1411:2148 min11:210 min24 Sep
Chicago13:13 → 11:1411:180 min11:180 min25 Sep
Jersey City14:13 → 12:1411:240 min11:2448 min25 Sep
Port of Spain15:13 → 13:1411:340 min11:3448 min25 Sep
London19:13 → 17:1411:280 min11:2848 min25 Sep
Durban21:13 → 19:1411:240 min11:2448 min25 Sep
Dubai22:54 → 20:5511:280 min11:2848 min25 Sep
Delhi00:43 → 22:4411:490 min11:4948 min25 Sep
Kolkata00:43 → 22:4411:050 min11:0448 min25 Sep
Singapore02:13 → 00:1411:330 min11:3348 min25 Sep
Sydney05:13 → 03:1411:240 min11:2448 min25 Sep
Suva07:08 → 05:0911:300 min11:3048 min25 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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