Ruling · Mahāṣṭamī (Durga Ashtami) · 2018

Wednesday 17 October

Boundaryin Multan, under the Rashtriya Panchang method. A threshold is only 3 min 11 s away. Say “contested”.

Decide it for

30°12′ N 71°29′ E · Asia/Karachi · GeoNames 1169825

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Tuesday 16 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:35  12:23 madhyāhna ends
10:4711:1111:3511:5912:2312:4713:11

48 of 48 minutes covered

Midday of Wednesday 17 October

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

madhyāhna begins 11:35  12:23 madhyāhna ends
Aṣṭamī ends 12:20:06
10:4711:1111:3511:5912:2312:4713:11

45 of 48 minutes covered, the first 45

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 09:47 on Tue 16 Oct to 12:20 on Wed 17 Oct.

    2018-10-16T04:46:42Z → 2018-10-17T07:20:06Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 16th, 11:35–12:23 on the 17th.

    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 16th and 45 of 48 on the 17th.

    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 191 s < 300 s

  5. 05

    Ruling

    Mahāṣṭamī, Multan, 2018: Wednesday 17 October.

    confidence: boundary (margin)

Say it like this

In Multan, Mahāṣṭamī (Durga Ashtami) 2018 falls on Wednesday 17 October. Aṣṭamī runs from 09:47 on Tue 16 Oct to 12:20 on Wed 17 Oct and covers 45 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 3 min 11 s from a threshold: treat the date as contested.

ahargana.org/multan/festivals/2018/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 17 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 17 Oct
compat-drikpanchangComparison profileWed 17 Oct
No institution has a recorded ruling for Multan.

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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles21:47 → 00:2012:1448 min12:140 min16 Oct
Chicago23:47 → 02:2012:1248 min12:120 min16 Oct
Jersey City00:47 → 03:2012:1848 min12:170 min16 Oct
Port of Spain00:47 → 03:2011:2848 min11:270 min16 Oct
London05:47 → 08:2012:2248 min12:210 min16 Oct
Durban06:47 → 09:2011:1848 min11:170 min16 Oct
Dubai08:47 → 11:2011:4048 min11:400 min16 Oct
Delhi10:17 → 12:5011:4248 min11:4248 min17 Oct
Kolkata10:17 → 12:5010:5848 min10:5848 min17 Oct
Singapore12:47 → 15:2012:2628 min12:2648 min17 Oct
Sydney15:47 → 18:2012:170 min12:1748 min17 Oct
Suva16:47 → 19:2011:280 min11:2848 min17 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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