Ruling · Janmāṣṭamī · 1942

Wednesday 2 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 626 minutes.

Decide it for

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

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Wednesday 2 September

Taken. The only night Aṣṭamī reaches.

niśītha begins 00:16  01:04 niśītha ends
23:2823:5200:1600:4001:0401:2801:52

48 of 48 minutes covered

Night of Thursday 3 September

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 00:16  01:04 niśītha ends
23:2823:5200:1600:4001:0401:2801:52

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 11:38 on Wed 2 Sep to 13:50 on Thu 3 Sep.

    1942-09-02T02:38:29Z → 1942-09-03T04:49:45Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:16–01:04 on the 2nd, 00:16–01:04 on the 3rd.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one night qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 37563 s

  5. 05

    Ruling

    Janmāṣṭamī, Daqing, 1942: Wednesday 2 September.

    confidence: determinate

Say it like this

In Daqing, Janmāṣṭamī 1942 falls on Wednesday 2 September. Aṣṭamī runs from 11:38 on Wed 2 Sep to 13:50 on Thu 3 Sep and covers all of niśītha that night.

ahargana.org/daqing/festivals/1942/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 2 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 2 Sep
compat-drikpanchangComparison profileWed 2 Sep
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/janmashtami · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Niśītha
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 103

“K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103. The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīNiśītha 2ndCoveredNiśītha 3rdCoveredRuled
Los Angeles19:38 → 21:5000:290 min00:280 min1 Sep
Chicago21:38 → 23:5000:260 min00:260 min1 Sep
Jersey City22:38 → 00:5000:3218 min00:320 min2 Sep
Port of Spain23:38 → 01:5000:4248 min00:410 min2 Sep
London03:38 → 05:5000:3748 min00:360 min2 Sep
Durban04:38 → 06:5023:3148 min23:310 min2 Sep
Dubai06:38 → 08:5023:5548 min23:540 min2 Sep
Delhi09:08 → 11:2000:5748 min00:570 min2 Sep
Kolkata09:08 → 11:2000:1248 min00:120 min2 Sep
Singapore11:38 → 13:5001:4048 min01:400 min2 Sep
Sydney12:38 → 14:5023:3148 min23:300 min2 Sep
Suva14:38 → 16:5023:4248 min23:420 min2 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
janmashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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