Ruling · Janmāṣṭamī · 1922

Tuesday 15 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 366 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 Tuesday 15 August

Taken. The only night Aṣṭamī reaches.

niśītha begins 23:21  00:09 niśītha ends
22:3322:5723:2123:4500:0900:3300:57

48 of 48 minutes covered

Night of Wednesday 16 August

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:21  00:09 niśītha ends
22:3322:5723:2123:4500:0900:3300:57

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 16:06 on Tue 15 Aug to 17:14 on Wed 16 Aug.

    1922-08-15T08:05:36Z → 1922-08-16T09:14:17Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:21–00:09 on the 15th, 23:21–00:09 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 21975 s

  5. 05

    Ruling

    Janmāṣṭamī, Daqing, 1922: Tuesday 15 August.

    confidence: determinate

Say it like this

In Daqing, Janmāṣṭamī 1922 falls on Tuesday 15 August. Aṣṭamī runs from 16:06 on Tue 15 Aug to 17:14 on Wed 16 Aug and covers all of niśītha that night.

ahargana.org/daqing/festivals/1922/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 15 Aug
Ahargaṇa, classicalDisc centre, no refractionTue 15 Aug
compat-drikpanchangComparison profileTue 15 Aug
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 15thCoveredNiśītha 16thCoveredRuled
Los Angeles00:06 → 01:1423:3348 min23:330 min15 Aug
Chicago03:06 → 04:1400:3148 min00:310 min15 Aug
Jersey City04:06 → 05:1400:3748 min00:370 min15 Aug
Port of Spain04:06 → 05:1423:4648 min23:460 min15 Aug
London09:06 → 10:1400:4148 min00:410 min15 Aug
Durban10:06 → 11:1423:3648 min23:360 min15 Aug
Dubai12:06 → 13:1423:5948 min23:590 min15 Aug
Delhi13:36 → 14:4400:0248 min00:010 min15 Aug
Kolkata13:36 → 14:4423:1748 min23:170 min15 Aug
Singapore15:06 → 16:1423:4548 min23:450 min15 Aug
Sydney18:06 → 19:1423:3548 min23:350 min15 Aug
Suva20:06 → 21:1423:4748 min23:460 min15 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
janmashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa