Ruling · Mahāṣṭamī (Durgāṣṭamī) · 2053

Monday 20 October

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 49 s away. Say “contested”.

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 19 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
Aṣṭamī begins 11:38:04
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Monday 20 October

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

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

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 11:38 on Sun 19 Oct to 14:10 on Mon 20 Oct.

    2053-10-19T03:38:05Z → 2053-10-20T06:10:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 19th, 11:39–12:27 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 49 s < 300 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 2053: Monday 20 October.

    confidence: boundary (margin)

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 2053 falls on Monday 20 October. Aṣṭamī runs from 11:38 on Sun 19 Oct to 14:10 on Mon 20 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. It is 0 min 49 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2053/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 20 Oct
compat-drikpanchangComparison profileMon 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles20:38 → 23:1012:1448 min12:130 min19 Oct
Chicago22:38 → 01:1012:1148 min12:110 min19 Oct
Jersey City23:38 → 02:1012:1748 min12:170 min19 Oct
Port of Spain23:38 → 02:1011:2748 min11:270 min19 Oct
London04:38 → 07:1012:2148 min12:210 min19 Oct
Durban05:38 → 08:1011:1748 min11:170 min19 Oct
Dubai07:38 → 10:1011:4048 min11:390 min19 Oct
Delhi09:08 → 11:4011:4248 min11:420 min19 Oct
Kolkata09:08 → 11:4010:5748 min10:5743 min20 Oct
Singapore11:38 → 14:1012:2648 min12:2548 min20 Oct
Sydney14:38 → 17:1012:160 min12:1648 min20 Oct
Suva15:38 → 18:1011:270 min11:2748 min20 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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