Ruling · Mahāṣṭamī (Durgāṣṭamī) · 1999

Monday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 17 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 17 October

Qualifies with 48 of 48 minutes. Not taken.

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

48 of 48 minutes covered

Midday of Monday 18 October

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

madhyāhna begins 11:39  12:27 madhyāhna ends
Aṣṭamī ends 11:55:49
10:5111:1511:3912:0312:2712:5113:15

17 of 48 minutes covered, the first 17

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 09:56 on Sun 17 Oct to 11:56 on Mon 18 Oct.

    1999-10-17T01:55:38Z → 1999-10-18T03:55:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 17th, 11:39–12:27 on the 18th.

    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 17th and 17 of 48 on the 18th.

    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 999 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 1999: Monday 18 October.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 1999 falls on Monday 18 October. Aṣṭamī runs from 09:56 on Sun 17 Oct to 11:56 on Mon 18 Oct and covers 17 of 48 minutes 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/1999/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 18 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 18 Oct
compat-drikpanchangComparison profileMon 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 Angeles18:56 → 20:5612:1448 min12:140 min17 Oct
Chicago20:56 → 22:5612:1248 min12:110 min17 Oct
Jersey City21:56 → 23:5612:1748 min12:170 min17 Oct
Port of Spain21:56 → 23:5611:2748 min11:270 min17 Oct
London02:56 → 04:5612:2248 min12:210 min17 Oct
Durban03:56 → 05:5611:1848 min11:170 min17 Oct
Dubai05:56 → 07:5611:4048 min11:400 min17 Oct
Delhi07:26 → 09:2611:4248 min11:420 min17 Oct
Kolkata07:26 → 09:2610:5848 min10:580 min17 Oct
Singapore09:56 → 11:5612:2648 min12:260 min17 Oct
Sydney11:56 → 13:5611:179 min11:1748 min18 Oct
Suva13:56 → 15:5611:280 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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