Ruling · Janmāṣṭamī (Kṛṣṇa Janmāṣṭamī) · 2066

Thursday 12 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 365 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two nights

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

Night of Thursday 12 August

Taken. The only night Aṣṭamī reaches.

niśītha begins 00:00  00:48 niśītha ends
23:1223:3600:0000:2400:4801:1201:36

48 of 48 minutes covered

Night of Friday 13 August

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:59  00:47 niśītha ends
23:1123:3523:5900:2300:4701:1101:35

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 16:15 on Thu 12 Aug to 17:55 on Fri 13 Aug.

    2066-08-12T08:14:31Z → 2066-08-13T09:54:47Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:00–00:48 on the 12th, 23:59–00:47 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 21875 s

  5. 05

    Ruling

    Janmāṣṭamī, Baoding, 2066: Thursday 12 August.

    confidence: determinate

Say it like this

In Baoding, Janmāṣṭamī (Krishna Janmashtami) 2066 falls on Thursday 12 August. Aṣṭamī runs from 16:15 on Thu 12 Aug to 17:55 on Fri 13 Aug and covers all of niśītha that night.

ahargana.org/baoding/festivals/2066/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 12 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 12 Aug
compat-drikpanchangComparison profileThu 12 Aug
No institution has a recorded ruling for Baoding.

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 12thCoveredNiśītha 13thCoveredRuled
Los Angeles01:15 → 02:5500:3448 min00:340 min12 Aug
Chicago03:15 → 04:5500:3248 min00:320 min12 Aug
Jersey City04:15 → 05:5500:3848 min00:370 min12 Aug
Port of Spain04:15 → 05:5523:4748 min23:470 min12 Aug
London09:15 → 10:5500:4248 min00:420 min12 Aug
Durban10:15 → 11:5523:3748 min23:370 min12 Aug
Dubai12:15 → 13:5500:0048 min00:000 min12 Aug
Delhi13:45 → 15:2500:0248 min00:020 min12 Aug
Kolkata13:45 → 15:2523:1848 min23:180 min12 Aug
Singapore16:15 → 17:5500:4648 min00:460 min12 Aug
Sydney18:15 → 19:5523:3648 min23:360 min12 Aug
Suva20:15 → 21:5523:4748 min23:470 min12 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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