Ruling · Mahāśivarātri · 1948

Tuesday 9 March

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 0 min 38 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 8 March

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:05  00:53 niśītha ends
Caturdaśī begins 00:53:17
23:1723:4100:0500:2900:5301:1701:41

0 of 48 minutes covered

Night of Tuesday 9 March

Taken. The only night Caturdaśī reaches.

niśītha begins 00:04  00:52 niśītha ends
23:1623:4000:0400:2800:5201:1601:40

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 00:53 on Tue 9 Mar to 03:12 on Wed 10 Mar.

    1948-03-08T16:53:18Z → 1948-03-09T19:11:34Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:05–00:53 on the 8th, 00:04–00:52 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 38 s < 300 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1948: Tuesday 9 March.

    confidence: boundary (margin)

Say it like this

In Baoding, Mahāśivarātri 1948 falls on Tuesday 9 March. Caturdaśī runs from 00:53 on Tue 9 Mar to 03:12 on Wed 10 Mar and covers all of niśītha that night. It is 0 min 38 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1948/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 9 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 9 Mar
compat-drikpanchangComparison profileTue 9 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 8thCoveredNiśītha 9thCoveredRuled
Los Angeles08:53 → 11:1223:3948 min23:390 min8 Mar
Chicago10:53 → 13:1223:3748 min23:370 min8 Mar
Jersey City11:53 → 14:1223:4348 min23:420 min8 Mar
Port of Spain12:53 → 15:1223:5348 min23:520 min8 Mar
London16:53 → 19:1223:4748 min23:460 min8 Mar
Durban18:53 → 21:1223:4348 min23:430 min8 Mar
Dubai20:53 → 23:1200:0548 min00:050 min8 Mar
Delhi22:23 → 00:4200:0848 min00:0734 min8 Mar
Kolkata22:23 → 00:4223:2348 min23:2348 min8 Mar
Singapore00:23 → 02:4200:2146 min00:2148 min9 Mar
Sydney02:53 → 05:1223:420 min23:4248 min9 Mar
Suva04:53 → 07:1223:530 min23:5348 min9 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

About Ahargaṇa