Ruling · Mahāṣṭamī (Durga Ashtami) · 1924

Sunday 5 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 20 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 Sunday 5 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:04  11:52 madhyāhna ends
Aṣṭamī begins 11:31:59
10:1610:4011:0411:2811:5212:1612:40

20 of 48 minutes covered, the last 20

Midday of Monday 6 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:04  11:52 madhyāhna ends
10:1610:4011:0411:2811:5212:1612:40

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 11:32 on Sun 5 Oct to 09:32 on Mon 6 Oct.

    1924-10-05T03:32:00Z → 1924-10-06T01:31:45Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:04–11:52 on the 5th, 11:04–11:52 on the 6th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 20 of 48 minutes on the 5th and 0 of 48 on the 6th.

    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 1211 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1924: Sunday 5 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1924 falls on Sunday 5 October. Aṣṭamī runs from 11:32 on Sun 5 Oct to 09:32 on Mon 6 Oct and covers 20 of 48 minutes of madhyāhna that midday.

ahargana.org/daqing/festivals/1924/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 5 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 5 Oct
compat-drikpanchangComparison profileSun 5 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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles19:32 → 17:3211:1748 min11:170 min5 Oct
Chicago21:32 → 19:3211:1548 min11:140 min5 Oct
Jersey City22:32 → 20:3211:2048 min11:200 min5 Oct
Port of Spain23:32 → 21:3211:3048 min11:300 min5 Oct
London03:32 → 01:3211:2548 min11:240 min5 Oct
Durban05:32 → 03:3211:2148 min11:200 min5 Oct
Dubai07:32 → 05:3211:4348 min11:430 min5 Oct
Delhi09:02 → 07:0211:4548 min11:450 min5 Oct
Kolkata09:02 → 07:0211:0148 min11:010 min5 Oct
Singapore10:32 → 08:3211:2948 min11:290 min5 Oct
Sydney13:32 → 11:3211:200 min11:2012 min6 Oct
Suva15:32 → 13:3211:310 min11:3148 min6 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

About Ahargaṇa