Ruling · Mahāśivarātri (Shivratri) · 1979

Sunday 25 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 208 minutes.

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 Saturday 24 February

Caturdaśī is absent from niśītha. Not taken.

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

0 of 48 minutes covered

Night of Sunday 25 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

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 08:00 on Sun 25 Feb to 04:23 on Mon 26 Feb.

    1979-02-25T00:00:26Z → 1979-02-25T20:22:48Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 24th, 00:07–00:55 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. 105

  4. 04

    Tie-break

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

    priority: disputed → only-day · margin 12470 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1979: Sunday 25 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 1979 falls on Sunday 25 February. Caturdaśī runs from 08:00 on Sun 25 Feb to 04:23 on Mon 26 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1979/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 25 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 25 Feb
compat-drikpanchangComparison profileSun 25 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 25thCoveredNiśītha 26thCoveredRuled
Los Angeles16:00 → 12:2323:420 min23:420 min24 Feb
Chicago18:00 → 14:2323:390 min23:390 min24 Feb
Jersey City19:00 → 15:2323:450 min23:450 min24 Feb
Port of Spain20:00 → 16:2323:550 min23:550 min24 Feb
London00:00 → 20:2323:490 min23:490 min24 Feb
Durban02:00 → 22:2323:450 min23:450 min24 Feb
Dubai04:00 → 00:2300:0815 min00:080 min25 Feb
Delhi05:30 → 01:5300:1048 min00:100 min25 Feb
Kolkata05:30 → 01:5323:2648 min23:250 min25 Feb
Singapore07:30 → 03:5300:2448 min00:240 min25 Feb
Sydney11:00 → 07:2300:4548 min00:440 min25 Feb
Suva12:00 → 08:2323:5648 min23:550 min25 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

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