Ruling · Mahāṣṭamī (Durga Ashtami) · 1902

Friday 10 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 19 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 Thursday 9 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:03  11:51 madhyāhna ends
Aṣṭamī begins 12:10:04
10:1510:3911:0311:2711:5112:1512:39

0 of 48 minutes covered

Midday of Friday 10 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:03  11:51 madhyāhna ends
10:1510:3911:0311:2711:5112:1512:39

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 12:10 on Thu 9 Oct to 14:27 on Fri 10 Oct.

    1902-10-09T04:10:05Z → 1902-10-10T06:27:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:03–11:51 on the 9th, 11:03–11:51 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 1131 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1902: Friday 10 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1902 falls on Friday 10 October. Aṣṭamī runs from 12:10 on Thu 9 Oct to 14:27 on Fri 10 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1902/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 10 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 10 Oct
compat-drikpanchangComparison profileFri 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles20:10 → 22:2711:1648 min11:160 min9 Oct
Chicago22:10 → 00:2711:1448 min11:130 min9 Oct
Jersey City23:10 → 01:2711:1948 min11:190 min9 Oct
Port of Spain00:10 → 02:2711:2948 min11:290 min9 Oct
London04:10 → 06:2711:2448 min11:230 min9 Oct
Durban05:40 → 07:5710:5048 min10:490 min9 Oct
Dubai07:51 → 10:0811:2348 min11:230 min9 Oct
Delhi09:31 → 11:4811:3548 min11:3513 min10 Oct
Kolkata09:31 → 11:4810:5148 min10:5148 min10 Oct
Singapore11:05 → 13:2211:2348 min11:2348 min10 Oct
Sydney14:10 → 16:2711:190 min11:1948 min10 Oct
Suva16:05 → 18:2211:250 min11:2548 min10 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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