Ruling · Mahāṣṭamī (Durga Ashtami) · 2083

Monday 18 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 564 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 Sunday 17 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:01  11:49 madhyāhna ends
10:1310:3711:0111:2511:4912:1312:37

0 of 48 minutes covered

Midday of Monday 18 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:01  11:49 madhyāhna ends
10:1310:3711:0111:2511:4912:1312:37

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 22:45 on Sun 17 Oct to 21:13 on Mon 18 Oct.

    2083-10-17T14:45:26Z → 2083-10-18T13:13:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:01–11:49 on the 17th, 11:01–11:49 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 0 of 48 minutes on the 17th and 48 of 48 on the 18th.

    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 33848 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 2083: Monday 18 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 2083 falls on Monday 18 October. Aṣṭamī runs from 22:45 on Sun 17 Oct to 21:13 on Mon 18 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2083/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 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles07:45 → 06:1312:1448 min12:140 min17 Oct
Chicago09:45 → 08:1312:1248 min12:120 min17 Oct
Jersey City10:45 → 09:1312:1848 min12:170 min17 Oct
Port of Spain10:45 → 09:1311:2848 min11:270 min17 Oct
London15:45 → 14:1312:220 min12:2148 min18 Oct
Durban16:45 → 15:1311:180 min11:1748 min18 Oct
Dubai18:45 → 17:1311:400 min11:4048 min18 Oct
Delhi20:15 → 18:4311:420 min11:4248 min18 Oct
Kolkata20:15 → 18:4310:580 min10:5848 min18 Oct
Singapore22:45 → 21:1312:260 min12:2648 min18 Oct
Sydney01:45 → 00:1312:170 min12:1748 min18 Oct
Suva02:45 → 01:1311:280 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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