Ruling · Mahāśivarātri · 1901

Sunday 17 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 508 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 Sunday 17 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 Monday 18 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 15:40 on Sun 17 Feb to 13:28 on Mon 18 Feb.

    1901-02-17T07:39:50Z → 1901-02-18T05:27:31Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 17th, 00:08–00:56 on the 18th.

    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 17th and 0 of 48 on the 18th.

    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 30494 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1901: Sunday 17 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri 1901 falls on Sunday 17 February. Caturdaśī runs from 15:40 on Sun 17 Feb to 13:28 on Mon 18 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1901/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 17 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 17 Feb
compat-drikpanchangComparison profileSun 17 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 17thCoveredNiśītha 18thCoveredRuled
Los Angeles23:40 → 21:2823:430 min23:430 min16 Feb
Chicago01:40 → 23:2823:400 min23:400 min16 Feb
Jersey City02:40 → 00:2823:4641 min23:460 min17 Feb
Port of Spain03:40 → 01:2823:5648 min23:560 min17 Feb
London07:40 → 05:2823:5048 min23:500 min17 Feb
Durban09:10 → 06:5823:1648 min23:160 min17 Feb
Dubai11:21 → 09:0923:5048 min23:500 min17 Feb
Delhi13:01 → 10:4900:0248 min00:020 min17 Feb
Kolkata13:01 → 10:4923:1848 min23:180 min17 Feb
Singapore14:35 → 12:2323:5048 min23:500 min17 Feb
Sydney17:40 → 15:2823:4648 min23:460 min17 Feb
Suva19:35 → 17:2323:5248 min23:520 min17 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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