Ruling · Janmāṣṭamī · 1906

Saturday 11 August

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 23 s away. Say “contested”.

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 Saturday 11 August

Taken. The only night Aṣṭamī reaches.

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

48 of 48 minutes covered

Night of Sunday 12 August

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:59  00:47 niśītha ends
Aṣṭamī ends 23:56:56
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 21:42 on Sat 11 Aug to 23:57 on Sun 12 Aug.

    1906-08-11T13:41:35Z → 1906-08-12T15:56:57Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 11th, 23:59–00:47 on the 12th.

    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 11th and 0 of 48 on the 12th.

    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 143 s < 300 s

  5. 05

    Ruling

    Janmāṣṭamī, Baoding, 1906: Saturday 11 August.

    confidence: boundary (margin)

Say it like this

In Baoding, Janmāṣṭamī 1906 falls on Saturday 11 August. Aṣṭamī runs from 21:42 on Sat 11 Aug to 23:57 on Sun 12 Aug and covers all of niśītha that night. It is 2 min 23 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1906/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 11 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 11 Aug
compat-drikpanchangComparison profileSat 11 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 11thCoveredNiśītha 12thCoveredRuled
Los Angeles05:42 → 07:5723:3448 min23:340 min11 Aug
Chicago07:42 → 09:5723:3248 min23:320 min11 Aug
Jersey City08:42 → 10:5723:3848 min23:370 min11 Aug
Port of Spain09:42 → 11:5723:4748 min23:470 min11 Aug
London13:42 → 15:5723:4248 min23:420 min11 Aug
Durban15:42 → 17:5723:3748 min23:370 min11 Aug
Dubai17:23 → 19:3823:4148 min23:410 min11 Aug
Delhi19:12 → 21:2700:0248 min00:020 min11 Aug
Kolkata19:12 → 21:2723:1848 min23:180 min11 Aug
Singapore20:42 → 22:5723:4648 min23:460 min11 Aug
Sydney23:42 → 01:5723:3642 min23:3648 min12 Aug
Suva01:37 → 03:5223:420 min23:4248 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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