Ruling · Janmāṣṭamī (Kṛṣṇa Janmāṣṭamī) · 1966

Wednesday 7 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 72 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 7 September

Taken. The only night Aṣṭamī reaches.

niśītha begins 23:14  00:02 niśītha ends
22:2622:5023:1423:3800:0200:2600:50

48 of 48 minutes covered

Night of Thursday 8 September

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:14  00:02 niśītha ends
22:2622:5023:1423:3800:0200:2600:50

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 22:00 on Wed 7 Sep to 22:02 on Thu 8 Sep.

    1966-09-07T13:59:45Z → 1966-09-08T14:02:16Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:14–00:02 on the 7th, 23:14–00:02 on the 8th.

    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 7th and 0 of 48 on the 8th.

    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 4310 s

  5. 05

    Ruling

    Janmāṣṭamī, Daqing, 1966: Wednesday 7 September.

    confidence: determinate

Say it like this

In Daqing, Janmāṣṭamī (Krishna Janmashtami) 1966 falls on Wednesday 7 September. Aṣṭamī runs from 22:00 on Wed 7 Sep to 22:02 on Thu 8 Sep and covers all of niśītha that night.

ahargana.org/daqing/festivals/1966/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 7 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 7 Sep
compat-drikpanchangComparison profileWed 7 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 7thCoveredNiśītha 8thCoveredRuled
Los Angeles07:00 → 07:0200:2748 min00:270 min7 Sep
Chicago09:00 → 09:0200:2548 min00:240 min7 Sep
Jersey City10:00 → 10:0200:3048 min00:300 min7 Sep
Port of Spain10:00 → 10:0223:4048 min23:400 min7 Sep
London15:00 → 15:0200:3548 min00:350 min7 Sep
Durban16:00 → 16:0223:3048 min23:290 min7 Sep
Dubai18:00 → 18:0223:5348 min23:530 min7 Sep
Delhi19:30 → 19:3223:5548 min23:550 min7 Sep
Kolkata19:30 → 19:3223:1148 min23:100 min7 Sep
Singapore21:30 → 21:3200:0948 min00:080 min7 Sep
Sydney00:00 → 00:0223:2917 min23:2934 min8 Sep
Suva02:00 → 02:0223:400 min23:4048 min8 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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