Ruling · Mahāśivarātri · 1924

Monday 3 March

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 55 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 Monday 3 March

Taken. The only night Caturdaśī reaches.

niśītha begins 00:06  00:54 niśītha ends
Caturdaśī begins 00:36:28
23:1823:4200:0600:3000:5401:1801:42

17 of 48 minutes covered, the last 17

Night of Tuesday 4 March

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:06  00:54 niśītha ends
Caturdaśī ends 00:03:44
23:1823:4200:0600:3000:5401:1801:42

0 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 00:36 on Tue 4 Mar to 00:04 on Wed 5 Mar.

    1924-03-03T16:36:28Z → 1924-03-04T16:03:45Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:06–00:54 on the 3rd, 00:06–00:54 on the 4th.

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

  3. 03

    Rule

    Caturdaśī must be present during niśītha. It covers 17 of 48 minutes on the 3rd and 0 of 48 on the 4th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: disputed → only-day · margin 115 s < 300 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1924: Monday 3 March.

    confidence: boundary (margin)

Say it like this

In Baoding, Mahāśivarātri 1924 falls on Monday 3 March. Caturdaśī runs from 00:36 on Tue 4 Mar to 00:04 on Wed 5 Mar and covers 17 of 48 minutes of niśītha that night. It is 1 min 55 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1924/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 3 Mar
Ahargaṇa, classicalDisc centre, no refractionMon 3 Mar
compat-drikpanchangComparison profileMon 3 Mar
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/maha-shivaratri · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Niśītha
Priority
Disputed
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 105

“K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105. 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 3rdCoveredNiśītha 4thCoveredRuled
Los Angeles08:36 → 08:0423:4148 min23:400 min3 Mar
Chicago10:36 → 10:0423:3848 min23:380 min3 Mar
Jersey City11:36 → 11:0423:4448 min23:440 min3 Mar
Port of Spain12:36 → 12:0423:5448 min23:540 min3 Mar
London16:36 → 16:0423:4848 min23:480 min3 Mar
Durban18:36 → 18:0423:4448 min23:440 min3 Mar
Dubai20:36 → 20:0400:0748 min00:060 min3 Mar
Delhi22:06 → 21:3400:0948 min00:090 min3 Mar
Kolkata22:06 → 21:3423:2448 min23:240 min3 Mar
Singapore23:36 → 23:0423:5348 min23:520 min3 Mar
Sydney02:36 → 02:0423:440 min23:4348 min4 Mar
Suva04:36 → 04:0423:550 min23:5448 min4 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
maha-shivaratri@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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