Ruling · Mahāśivarātri (Shivratri) · 1962

Sunday 4 March

Boundaryin Baoding, under the Rashtriya Panchang method. Caturdaśī reaches niśītha on neither day and the rule does not say what then. 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 Sunday 4 March

Taken. Caturdaśī reaches neither night; this is the day it falls on.

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

0 of 48 minutes covered

Night of Monday 5 March

Caturdaśī is absent from niśītha. Not taken.

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

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 01:51 on Mon 5 Mar to 22:17 on Mon 5 Mar.

    1962-03-04T17:50:40Z → 1962-03-05T14:16:45Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:06–00:54 on the 4th, 00:05–00:53 on the 5th.

    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 4th and 0 of 48 on the 5th.

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

  4. 04

    Tie-break

    Neither night qualifies. The day the tithi falls on is taken.

    priority: disputed → tithi-day · margin 3422 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1962: Sunday 4 March.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 1962 falls on Sunday 4 March. Caturdaśī runs from 01:51 on Mon 5 Mar to 22:17 on Mon 5 Mar, and reaches niśītha on neither day.

ahargana.org/baoding/festivals/1962/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 4 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 4 Mar
compat-drikpanchangComparison profileSun 4 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 4thCoveredNiśītha 5thCoveredRuled
Los Angeles09:51 → 06:1723:4048 min23:400 min4 Mar
Chicago11:51 → 08:1723:3848 min23:380 min4 Mar
Jersey City12:51 → 09:1723:4448 min23:430 min4 Mar
Port of Spain13:51 → 10:1723:5448 min23:530 min4 Mar
London17:51 → 14:1723:4848 min23:480 min4 Mar
Durban19:51 → 16:1723:4448 min23:440 min4 Mar
Dubai21:51 → 18:1700:0648 min00:060 min4 Mar
Delhi23:21 → 19:4700:0948 min00:080 min4 Mar
Kolkata23:21 → 19:4723:2448 min23:240 min4 Mar
Singapore01:21 → 21:4700:220 min00:220 min4 Mar
Sydney03:51 → 00:1723:430 min23:4334 min5 Mar
Suva05:51 → 02:1723:540 min23:5448 min5 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