Ruling · Mahāṣṭamī (Durgāṣṭamī) · 1991

Wednesday 16 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 15 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 Tuesday 15 October

Qualifies with 15 of 48 minutes. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
Aṣṭamī begins 12:13:06
10:5211:1611:4012:0412:2812:5213:16

15 of 48 minutes covered, the last 15

Midday of Wednesday 16 October

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

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 12:13 on Tue 15 Oct to 14:52 on Wed 16 Oct.

    1991-10-15T04:13:06Z → 1991-10-16T06:51:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 15th, 11:40–12:28 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 15 of 48 minutes on the 15th and 48 of 48 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 884 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 1991: Wednesday 16 October.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 1991 falls on Wednesday 16 October. Aṣṭamī runs from 12:13 on Tue 15 Oct to 14:52 on Wed 16 Oct and covers all of madhyāhna that midday. It also reaches the previous midday for 15 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/1991/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 16 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 16 Oct
compat-drikpanchangComparison profileWed 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles21:13 → 23:5212:1548 min12:140 min15 Oct
Chicago23:13 → 01:5212:1248 min12:120 min15 Oct
Jersey City00:13 → 02:5212:1848 min12:180 min15 Oct
Port of Spain00:13 → 02:5211:2848 min11:280 min15 Oct
London05:13 → 07:5212:2248 min12:220 min15 Oct
Durban06:13 → 08:5211:1848 min11:180 min15 Oct
Dubai08:13 → 10:5211:4148 min11:400 min15 Oct
Delhi09:43 → 12:2211:4348 min11:4339 min16 Oct
Kolkata09:43 → 12:2210:5848 min10:5848 min16 Oct
Singapore12:13 → 14:5212:2748 min12:2648 min16 Oct
Sydney14:13 → 16:5211:170 min11:1748 min16 Oct
Suva16:13 → 18:5211:280 min11:2848 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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