Ruling · Mahāṣṭamī (Durgāṣṭamī) · 1983

Friday 14 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 171 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Thursday 13 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:02  11:50 madhyāhna ends
10:1410:3811:0211:2611:5012:1412:38

0 of 48 minutes covered

Midday of Friday 14 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:02  11:50 madhyāhna ends
10:1410:3811:0211:2611:5012:1412:38

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 14:41 on Thu 13 Oct to 16:49 on Fri 14 Oct.

    1983-10-13T06:41:27Z → 1983-10-14T08:49:28Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:02–11:50 on the 13th, 11:02–11:50 on the 14th.

    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 13th and 48 of 48 on the 14th.

    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 10282 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 1983: Friday 14 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 1983 falls on Friday 14 October. Aṣṭamī runs from 14:41 on Thu 13 Oct to 16:49 on Fri 14 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1983/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 14 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 14 Oct
compat-drikpanchangComparison profileFri 14 Oct
No institution has a recorded ruling for Daqing.

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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles23:41 → 01:4912:1548 min12:150 min13 Oct
Chicago01:41 → 03:4912:1348 min12:120 min13 Oct
Jersey City02:41 → 04:4912:1848 min12:180 min13 Oct
Port of Spain02:41 → 04:4911:2848 min11:280 min13 Oct
London07:41 → 09:4912:2248 min12:220 min13 Oct
Durban08:41 → 10:4911:1848 min11:180 min13 Oct
Dubai10:41 → 12:4911:4148 min11:4148 min14 Oct
Delhi12:11 → 14:1911:4320 min11:4348 min14 Oct
Kolkata12:11 → 14:1910:590 min10:5948 min14 Oct
Singapore14:41 → 16:4912:270 min12:2748 min14 Oct
Sydney16:41 → 18:4911:180 min11:1848 min14 Oct
Suva18:41 → 20:4911:290 min11:2948 min14 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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