Ruling · Mahāśivarātri (Shivratri) · 1980

Thursday 14 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 62 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 Thursday 14 February

Taken. The only night Caturdaśī reaches.

niśītha begins 00:08  00:56 niśītha ends
23:2023:4400:0800:3200:5601:2001:44

48 of 48 minutes covered

Night of Friday 15 February

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:08  00:56 niśītha ends
23:2023:4400:0800:3200:5601:2001:44

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 23:06 on Thu 14 Feb to 20:09 on Fri 15 Feb.

    1980-02-14T15:06:30Z → 1980-02-15T12:09:14Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 14th, 00:08–00:56 on the 15th.

    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 14th and 0 of 48 on the 15th.

    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 3693 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1980: Thursday 14 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 1980 falls on Thursday 14 February. Caturdaśī runs from 23:06 on Thu 14 Feb to 20:09 on Fri 15 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1980/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 14 Feb
Ahargaṇa, classicalDisc centre, no refractionThu 14 Feb
compat-drikpanchangComparison profileThu 14 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 14thCoveredNiśītha 15thCoveredRuled
Los Angeles07:06 → 04:0923:4348 min23:430 min14 Feb
Chicago09:06 → 06:0923:4048 min23:400 min14 Feb
Jersey City10:06 → 07:0923:4648 min23:460 min14 Feb
Port of Spain11:06 → 08:0923:5648 min23:560 min14 Feb
London15:06 → 12:0923:5048 min23:500 min14 Feb
Durban17:06 → 14:0923:4648 min23:460 min14 Feb
Dubai19:06 → 16:0900:0948 min00:090 min14 Feb
Delhi20:36 → 17:3900:1148 min00:110 min14 Feb
Kolkata20:36 → 17:3923:2748 min23:270 min14 Feb
Singapore22:36 → 19:3900:2548 min00:250 min14 Feb
Sydney02:06 → 23:0900:460 min00:460 min14 Feb
Suva03:06 → 00:0923:570 min23:5713 min15 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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