Ruling · Mahāṣṭamī (Durga Ashtami) · 1937

Wednesday 13 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 12 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

48 of 48 minutes covered

Midday of Wednesday 13 October

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

madhyāhna begins 11:40  12:28 madhyāhna ends
Aṣṭamī ends 12:41:16
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 10:44 on Tue 12 Oct to 12:41 on Wed 13 Oct.

    1937-10-12T02:43:54Z → 1937-10-13T04:41:16Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 12th, 11:40–12:28 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 779 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 1937: Wednesday 13 October.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 1937 falls on Wednesday 13 October. Aṣṭamī runs from 10:44 on Tue 12 Oct to 12:41 on Wed 13 Oct and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.

ahargana.org/baoding/festivals/1937/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 13 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 13 Oct
compat-drikpanchangComparison profileWed 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles18:44 → 20:4111:1548 min11:150 min12 Oct
Chicago20:44 → 22:4111:1348 min11:130 min12 Oct
Jersey City21:44 → 23:4111:1948 min11:180 min12 Oct
Port of Spain22:44 → 00:4111:2948 min11:280 min12 Oct
London02:44 → 04:4111:2348 min11:220 min12 Oct
Durban04:44 → 06:4111:1948 min11:180 min12 Oct
Dubai06:44 → 08:4111:4148 min11:410 min12 Oct
Delhi08:14 → 10:1111:4448 min11:430 min12 Oct
Kolkata08:14 → 10:1110:5948 min10:590 min12 Oct
Singapore10:04 → 12:0111:4748 min11:4714 min13 Oct
Sydney12:44 → 14:4111:180 min11:1848 min13 Oct
Suva14:44 → 16:4111:290 min11:2948 min13 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