Ruling · Mahāṣṭamī (Durgāṣṭamī) · 2030

Friday 4 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 631 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 Thursday 3 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

0 of 48 minutes covered

Midday of Friday 4 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

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 00:55 on Fri 4 Oct to 23:01 on Fri 4 Oct.

    2030-10-03T16:54:58Z → 2030-10-04T15:01:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 3rd, 11:43–12:31 on the 4th.

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

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.

    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 37839 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 2030: Friday 4 October.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 2030 falls on Friday 4 October. Aṣṭamī runs from 00:55 on Fri 4 Oct to 23:01 on Fri 4 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2030/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 4 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 4 Oct
compat-drikpanchangComparison profileFri 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles09:55 → 08:0112:1848 min12:170 min3 Oct
Chicago11:55 → 10:0112:1548 min12:150 min3 Oct
Jersey City12:55 → 11:0112:2114 min12:210 min3 Oct
Port of Spain12:55 → 11:0111:310 min11:310 min4 Oct
London17:55 → 16:0112:250 min12:2548 min4 Oct
Durban18:55 → 17:0111:210 min11:2148 min4 Oct
Dubai20:55 → 19:0111:440 min11:4348 min4 Oct
Delhi22:25 → 20:3111:460 min11:4648 min4 Oct
Kolkata22:25 → 20:3111:010 min11:0148 min4 Oct
Singapore00:55 → 23:0112:300 min12:2948 min4 Oct
Sydney02:55 → 01:0111:210 min11:2048 min4 Oct
Suva04:55 → 03:0111:320 min11:3148 min4 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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