Ruling · Śivarātri · 1908

Tuesday 25 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 74 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Monday 24 August

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 23:57  00:45 niśītha ends
23:0923:3323:5700:2100:4501:0901:33

0 of 48 minutes covered

Night of Tuesday 25 August

Taken. The only night Caturdaśī reaches.

niśītha begins 23:56  00:44 niśītha ends
23:0823:3223:5600:2000:4401:0801:32

48 of 48 minutes covered

Caturdaśī presentNiśītha, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 01:58 on Tue 25 Aug to 04:29 on Wed 26 Aug.

    1908-08-24T17:58:15Z → 1908-08-25T20:29:21Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:57–00:45 on the 24th, 23:56–00:44 on the 25th.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 24th and 48 of 48 on the 25th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108

  4. 04

    Tie-break

    Only one night qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 4415 s

  5. 05

    Ruling

    Śivarātri, Baoding, 1908: Tuesday 25 August.

    confidence: determinate

Say it like this

In Baoding, Śivarātri 1908 falls on Tuesday 25 August. Caturdaśī runs from 01:58 on Tue 25 Aug to 04:29 on Wed 26 Aug and covers all of niśītha that night.

ahargana.org/baoding/festivals/1908/shivaratri?on=1908-08-25 · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Aug
Ahargaṇa, classicalDisc centre, no refractionTue 25 Aug
compat-drikpanchangComparison profileTue 25 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/shivaratri · ruleset 2026.3-draft

Month
Every lunation
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Niśītha
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 108

“The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108. The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīNiśītha 24thCoveredNiśītha 25thCoveredRuled
Los Angeles09:58 → 12:2923:3148 min23:310 min24 Aug
Chicago11:58 → 14:2923:2948 min23:290 min24 Aug
Jersey City12:58 → 15:2923:3548 min23:340 min24 Aug
Port of Spain13:58 → 16:2923:4448 min23:440 min24 Aug
London17:58 → 20:2923:3948 min23:390 min24 Aug
Durban19:58 → 22:2923:3448 min23:340 min24 Aug
Dubai21:39 → 00:1023:3848 min23:3832 min24 Aug
Delhi23:28 → 01:5923:5948 min23:5948 min24 Aug
Kolkata23:28 → 01:5923:1535 min23:1548 min25 Aug
Singapore00:58 → 03:2923:430 min23:4348 min25 Aug
Sydney03:58 → 06:2923:330 min23:3348 min25 Aug
Suva05:53 → 08:2423:390 min23:3948 min25 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shivaratri@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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