Ruling · Janmāṣṭamī · 1938

Thursday 18 August

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 372 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 Thursday 18 August

Taken. The only night Aṣṭamī reaches.

niśītha begins 23:20  00:08 niśītha ends
22:3222:5623:2023:4400:0800:3200:56

48 of 48 minutes covered

Night of Friday 19 August

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:20  00:08 niśītha ends
22:3222:5623:2023:4400:0800:3200:56

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 17:08 on Thu 18 Aug to 15:44 on Fri 19 Aug.

    1938-08-18T09:08:10Z → 1938-08-19T07:44:05Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:20–00:08 on the 18th, 23:20–00:08 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 22318 s

  5. 05

    Ruling

    Janmāṣṭamī, Daqing, 1938: Thursday 18 August.

    confidence: determinate

Say it like this

In Daqing, Janmāṣṭamī 1938 falls on Thursday 18 August. Aṣṭamī runs from 17:08 on Thu 18 Aug to 15:44 on Fri 19 Aug and covers all of niśītha that night.

ahargana.org/daqing/festivals/1938/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 18 Aug
compat-drikpanchangComparison profileThu 18 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 18thCoveredNiśītha 19thCoveredRuled
Los Angeles01:08 → 23:4423:3311 min23:330 min18 Aug
Chicago04:08 → 02:4400:3148 min00:300 min18 Aug
Jersey City05:08 → 03:4400:3648 min00:360 min18 Aug
Port of Spain05:08 → 03:4423:4648 min23:460 min18 Aug
London10:08 → 08:4400:4148 min00:400 min18 Aug
Durban11:08 → 09:4423:3548 min23:350 min18 Aug
Dubai13:08 → 11:4423:5948 min23:580 min18 Aug
Delhi14:38 → 13:1400:0148 min00:010 min18 Aug
Kolkata14:38 → 13:1423:1648 min23:160 min18 Aug
Singapore16:28 → 15:0400:0448 min00:040 min18 Aug
Sydney19:08 → 17:4423:3548 min23:350 min18 Aug
Suva21:08 → 19:4423:4648 min23:460 min18 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

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