Ruling · Mahāśivarātri · 1925

Saturday 21 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 504 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 21 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 Sunday 22 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

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 15:44 on Sat 21 Feb to 12:52 on Sun 22 Feb.

    1925-02-21T07:43:52Z → 1925-02-22T04:51:53Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 21st, 00:07–00:55 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 30225 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1925: Saturday 21 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri 1925 falls on Saturday 21 February. Caturdaśī runs from 15:44 on Sat 21 Feb to 12:52 on Sun 22 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1925/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 21 Feb
compat-drikpanchangComparison profileSat 21 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 21stCoveredNiśītha 22ndCoveredRuled
Los Angeles23:44 → 20:5223:420 min23:420 min20 Feb
Chicago01:44 → 22:5223:400 min23:400 min20 Feb
Jersey City02:44 → 23:5223:466 min23:460 min21 Feb
Port of Spain03:44 → 00:5223:5648 min23:560 min21 Feb
London07:44 → 04:5223:5048 min23:500 min21 Feb
Durban09:44 → 06:5223:4648 min23:460 min21 Feb
Dubai11:44 → 08:5200:0848 min00:080 min21 Feb
Delhi13:14 → 10:2200:1148 min00:110 min21 Feb
Kolkata13:14 → 10:2223:2648 min23:260 min21 Feb
Singapore14:44 → 11:5223:5448 min23:540 min21 Feb
Sydney17:44 → 14:5223:4548 min23:450 min21 Feb
Suva19:44 → 16:5223:5648 min23:560 min21 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