Ruling · Mahāṣṭamī (Durga Ashtami) · 1915

Friday 15 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 16 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 Friday 15 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:02  11:50 madhyāhna ends
Aṣṭamī begins 10:46:06
10:1410:3811:0211:2611:5012:1412:38

48 of 48 minutes covered

Midday of Saturday 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

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 10:46 on Fri 15 Oct to 09:03 on Sat 16 Oct.

    1915-10-15T02:46:07Z → 1915-10-16T01:02:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 15th, 11:02–11:50 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 938 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1915: Friday 15 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1915 falls on Friday 15 October. Aṣṭamī runs from 10:46 on Fri 15 Oct to 09:03 on Sat 16 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1915/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 15 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 15 Oct
compat-drikpanchangComparison profileFri 15 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles18:46 → 17:0311:1548 min11:140 min15 Oct
Chicago20:46 → 19:0311:1248 min11:120 min15 Oct
Jersey City21:46 → 20:0311:1848 min11:180 min15 Oct
Port of Spain22:46 → 21:0311:2848 min11:280 min15 Oct
London02:46 → 01:0311:2248 min11:220 min15 Oct
Durban04:46 → 03:0311:1848 min11:180 min15 Oct
Dubai06:27 → 04:4411:2248 min11:210 min15 Oct
Delhi08:16 → 06:3311:4348 min11:430 min15 Oct
Kolkata08:16 → 06:3310:5848 min10:580 min15 Oct
Singapore09:46 → 08:0311:2748 min11:260 min15 Oct
Sydney12:46 → 11:0311:180 min11:170 min16 Oct
Suva14:41 → 12:5811:240 min11:2348 min16 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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