Ruling · Mahāśivarātri (Shivratri) · 2010

Friday 12 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 271 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 11 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

Night of Friday 12 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

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 05:27 on Fri 12 Feb to 08:11 on Sat 13 Feb.

    2010-02-11T21:27:21Z → 2010-02-13T00:11:04Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 11th, 00:08–00:56 on the 12th.

    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 11th and 48 of 48 on the 12th.

    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 16279 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 2010: Friday 12 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 2010 falls on Friday 12 February. Caturdaśī runs from 05:27 on Fri 12 Feb to 08:11 on Sat 13 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/2010/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 12 Feb
compat-drikpanchangComparison profileFri 12 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 11thCoveredNiśītha 13thCoveredRuled
Los Angeles13:27 → 16:1123:4348 min23:430 min11 Feb
Chicago15:27 → 18:1123:4048 min23:400 min11 Feb
Jersey City16:27 → 19:1123:4648 min23:460 min11 Feb
Port of Spain17:27 → 20:1123:5648 min23:560 min11 Feb
London21:27 → 00:1123:5048 min23:500 min11 Feb
Durban23:27 → 02:1123:4648 min23:460 min11 Feb
Dubai01:27 → 04:1100:090 min00:090 min12 Feb
Delhi02:57 → 05:4100:110 min00:110 min12 Feb
Kolkata02:57 → 05:4123:270 min23:270 min12 Feb
Singapore05:27 → 08:1100:550 min00:550 min12 Feb
Sydney08:27 → 11:1100:460 min00:460 min12 Feb
Suva10:27 → 13:1100:570 min00:570 min12 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