Ruling · Mahāśivarātri (Shivratri) · 1957

Wednesday 27 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 138 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 Wednesday 27 February

Taken. The only night Caturdaśī reaches.

niśītha begins 00:07  00:55 niśītha ends
23:1923:4300:0700:3100:5501:1901:43

48 of 48 minutes covered

Night of Thursday 28 February

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:06  00:54 niśītha ends
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 19:18 on Wed 27 Feb to 21:49 on Thu 28 Feb.

    1957-02-27T11:18:06Z → 1957-02-28T13:48:56Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 27th, 00:06–00:54 on the 28th.

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

  3. 03

    Rule

    Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.

    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 8250 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1957: Wednesday 27 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 1957 falls on Wednesday 27 February. Caturdaśī runs from 19:18 on Wed 27 Feb to 21:49 on Thu 28 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1957/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 27 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 27 Feb
compat-drikpanchangComparison profileWed 27 Feb
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 27thCoveredNiśītha 28thCoveredRuled
Los Angeles03:18 → 05:4923:4148 min23:410 min27 Feb
Chicago05:18 → 07:4923:3948 min23:390 min27 Feb
Jersey City06:18 → 08:4923:4548 min23:440 min27 Feb
Port of Spain07:18 → 09:4923:5548 min23:550 min27 Feb
London11:18 → 13:4923:4948 min23:490 min27 Feb
Durban13:18 → 15:4923:4548 min23:450 min27 Feb
Dubai15:18 → 17:4900:0748 min00:070 min27 Feb
Delhi16:48 → 19:1900:1048 min00:090 min27 Feb
Kolkata16:48 → 19:1923:2548 min23:250 min27 Feb
Singapore18:48 → 21:1900:2348 min00:230 min27 Feb
Sydney21:18 → 23:4923:4448 min23:445 min27 Feb
Suva23:18 → 01:4923:5548 min23:5548 min27 Feb
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