Ruling · Janmāṣṭamī · 1933

Sunday 13 August

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 3 min 11 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 12 August

Qualifies with 48 of 48 minutes. Not taken.

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

48 of 48 minutes covered

Night of Sunday 13 August

Taken. Both nights qualify; the rule takes the second.

niśītha begins 23:59  00:47 niśītha ends
Aṣṭamī ends 00:50:18
23:1123:3523:5900:2300:4701:1101:35

48 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 22:55 on Sat 12 Aug to 00:50 on Mon 14 Aug.

    1933-08-12T14:54:49Z → 1933-08-13T16:50:19Z

  2. 02

    Kāla

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

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both nights qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 191 s < 300 s

  5. 05

    Ruling

    Janmāṣṭamī, Baoding, 1933: Sunday 13 August.

    confidence: boundary (margin)

Say it like this

In Baoding, Janmāṣṭamī 1933 falls on Sunday 13 August. Aṣṭamī runs from 22:55 on Sat 12 Aug to 00:50 on Mon 14 Aug and covers all of niśītha that night. It also reaches the previous night for 48 minutes; by the rule the second night is taken. It is 3 min 11 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1933/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 13 Aug
compat-drikpanchangComparison profileSun 13 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 Angeles06:55 → 08:5023:3448 min23:340 min12 Aug
Chicago09:55 → 11:5000:3248 min00:310 min12 Aug
Jersey City10:55 → 12:5000:3748 min00:370 min12 Aug
Port of Spain10:55 → 12:5023:4748 min23:470 min12 Aug
London15:55 → 17:5000:4248 min00:420 min12 Aug
Durban16:55 → 18:5023:3748 min23:360 min12 Aug
Dubai18:55 → 20:5000:0048 min00:000 min12 Aug
Delhi20:25 → 22:2000:0248 min00:020 min12 Aug
Kolkata20:25 → 22:2023:1848 min23:170 min12 Aug
Singapore22:15 → 00:1000:0648 min00:055 min13 Aug
Sydney00:55 → 02:5023:360 min23:3648 min13 Aug
Suva02:55 → 04:5023:470 min23:4748 min13 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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