Ruling · Mahāṣṭamī (Durga Ashtami) · 1923

Wednesday 17 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 285 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 16 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:02  11:50 madhyāhna ends
10:1410:3811:0211:2611:5012:1412:38

0 of 48 minutes covered

Midday of Wednesday 17 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:01  11:49 madhyāhna ends
10:1310:3711:0111:2511:4912:1312:37

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 17:23 on Tue 16 Oct to 16:34 on Wed 17 Oct.

    1923-10-16T09:23:28Z → 1923-10-17T08:34:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 16th, 11:01–11:49 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 17098 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1923: Wednesday 17 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1923 falls on Wednesday 17 October. Aṣṭamī runs from 17:23 on Tue 16 Oct to 16:34 on Wed 17 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1923/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 17 Oct
compat-drikpanchangComparison profileWed 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles01:23 → 00:3411:1448 min11:140 min16 Oct
Chicago03:23 → 02:3411:1248 min11:120 min16 Oct
Jersey City04:23 → 03:3411:1848 min11:180 min16 Oct
Port of Spain05:23 → 04:3411:2848 min11:280 min16 Oct
London09:23 → 08:3411:2248 min11:220 min16 Oct
Durban11:23 → 10:3411:1842 min11:180 min16 Oct
Dubai13:23 → 12:3411:400 min11:4048 min17 Oct
Delhi14:53 → 14:0411:430 min11:4348 min17 Oct
Kolkata14:53 → 14:0410:580 min10:5848 min17 Oct
Singapore16:23 → 15:3411:260 min11:2648 min17 Oct
Sydney19:23 → 18:3411:170 min11:1748 min17 Oct
Suva21:23 → 20:3411:280 min11:2848 min17 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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