Ruling · Mahāṣṭamī (Durga Ashtami) · 1931

Sunday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 357 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Sunday 18 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Monday 19 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

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 05:10 on Sun 18 Oct to 05:42 on Mon 19 Oct.

    1931-10-17T21:09:48Z → 1931-10-18T21:41:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 18th, 11:39–12:27 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 21436 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 1931: Sunday 18 October.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 1931 falls on Sunday 18 October. Aṣṭamī runs from 05:10 on Sun 18 Oct to 05:42 on Mon 19 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1931/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 18 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 18 Oct
compat-drikpanchangComparison profileSun 18 Oct
No institution has a recorded ruling for Baoding.

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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles13:10 → 13:4211:140 min11:1448 min18 Oct
Chicago15:10 → 15:4211:120 min11:1248 min18 Oct
Jersey City16:10 → 16:4211:180 min11:1748 min18 Oct
Port of Spain17:10 → 17:4211:280 min11:2748 min18 Oct
London21:10 → 21:4211:220 min11:2148 min18 Oct
Durban23:10 → 23:4211:180 min11:1848 min18 Oct
Dubai01:10 → 01:4211:400 min11:4048 min18 Oct
Delhi02:40 → 03:1211:420 min11:4248 min18 Oct
Kolkata02:40 → 03:1210:580 min10:5848 min18 Oct
Singapore04:10 → 04:4211:260 min11:2648 min18 Oct
Sydney07:10 → 07:4211:170 min11:1748 min18 Oct
Suva09:10 → 09:4211:280 min11:2848 min18 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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