Ruling · Mahāṣṭamī (Durgāṣṭamī) · 2033

Sunday 2 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 30 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 Saturday 1 October

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:05  11:53 madhyāhna ends
Aṣṭamī begins 12:23:12
10:1710:4111:0511:2911:5312:1712:41

0 of 48 minutes covered

Midday of Sunday 2 October

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:05  11:53 madhyāhna ends
Aṣṭamī ends 12:30:49
10:1710:4111:0511:2911:5312:1712:41

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 12:23 on Sat 1 Oct to 12:31 on Sun 2 Oct.

    2033-10-01T04:23:13Z → 2033-10-02T04:30:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 1st, 11:05–11:53 on the 2nd.

    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 1st and 48 of 48 on the 2nd.

    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 1795 s

  5. 05

    Ruling

    Mahāṣṭamī, Daqing, 2033: Sunday 2 October.

    confidence: determinate

Say it like this

In Daqing, Mahāṣṭamī (Durga Ashtami) 2033 falls on Sunday 2 October. Aṣṭamī runs from 12:23 on Sat 1 Oct to 12:31 on Sun 2 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2033/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 2 Oct
compat-drikpanchangComparison profileSun 2 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles21:23 → 21:3112:1848 min12:180 min1 Oct
Chicago23:23 → 23:3112:1648 min12:150 min1 Oct
Jersey City00:23 → 00:3112:2148 min12:210 min1 Oct
Port of Spain00:23 → 00:3111:3248 min11:310 min1 Oct
London05:23 → 05:3112:2648 min12:250 min1 Oct
Durban06:23 → 06:3111:2248 min11:210 min1 Oct
Dubai08:23 → 08:3111:4448 min11:440 min1 Oct
Delhi09:53 → 10:0111:4748 min11:460 min1 Oct
Kolkata09:53 → 10:0111:0248 min11:020 min1 Oct
Singapore12:23 → 12:3112:3048 min12:301 min2 Oct
Sydney14:23 → 15:3111:210 min12:2148 min2 Oct
Suva16:23 → 16:3111:320 min11:3248 min2 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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