Ruling · Mahāṣṭamī (Durga Ashtami) · 2017

Thursday 28 September

Determinatein Daegu, under the Rashtriya Panchang method. Clear of every threshold by 598 minutes.

Decide it for

DaeguDelhiKolkataSingaporeSydneyJersey City

35°52′ N 128°36′ E · Asia/Seoul · GeoNames 1835329

The two middays

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

Midday of Wednesday 27 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Thursday 28 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 22:39 on Wed 27 Sep to 01:07 on Fri 29 Sep.

    2017-09-27T13:38:42Z → 2017-09-28T16:06:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 27th, 11:52–12:40 on the 28th.

    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 27th and 48 of 48 on the 28th.

    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 35901 s

  5. 05

    Ruling

    Mahāṣṭamī, Daegu, 2017: Thursday 28 September.

    confidence: determinate

Say it like this

In Daegu, Mahāṣṭamī (Durga Ashtami) 2017 falls on Thursday 28 September. Aṣṭamī runs from 22:39 on Wed 27 Sep to 01:07 on Fri 29 Sep and covers all of madhyāhna that midday.

ahargana.org/daegu/festivals/2017/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 28 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 28 Sep
compat-drikpanchangComparison profileThu 28 Sep
No institution has a recorded ruling for Daegu.

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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles06:39 → 09:0712:2048 min12:190 min27 Sep
Chicago08:39 → 11:0712:1748 min12:170 min27 Sep
Jersey City09:39 → 12:0712:2348 min12:220 min27 Sep
Port of Spain09:39 → 12:0711:3348 min11:3334 min28 Sep
London14:39 → 17:0712:270 min12:2748 min28 Sep
Durban15:39 → 18:0711:230 min11:2348 min28 Sep
Dubai17:39 → 20:0711:460 min11:4548 min28 Sep
Delhi19:09 → 21:3711:480 min11:4848 min28 Sep
Kolkata19:09 → 21:3711:030 min11:0348 min28 Sep
Singapore21:39 → 00:0712:320 min12:3148 min28 Sep
Sydney23:39 → 02:0711:220 min11:2248 min28 Sep
Suva01:39 → 04:0711:340 min11:3348 min28 Sep
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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