Ruling · Mahāśivarātri (Shivratri) · 2013

Sunday 10 March

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 248 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 9 March

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 00:04  00:52 niśītha ends
23:1623:4000:0400:2800:5201:1601:40

0 of 48 minutes covered

Night of Sunday 10 March

Taken. The only night Caturdaśī reaches.

niśītha begins 00:04  00:52 niśītha ends
23:1623:4000:0400:2800:5201:1601:40

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 06:34 on Sun 10 Mar to 05:00 on Mon 11 Mar.

    2013-03-09T22:34:13Z → 2013-03-10T21:00:10Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:04–00:52 on the 9th, 00:04–00:52 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 14891 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 2013: Sunday 10 March.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 2013 falls on Sunday 10 March. Caturdaśī runs from 06:34 on Sun 10 Mar to 05:00 on Mon 11 Mar and covers all of niśītha that night.

ahargana.org/baoding/festivals/2013/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 10 Mar
compat-drikpanchangComparison profileSun 10 Mar
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 9thCoveredNiśītha 10thCoveredRuled
Los Angeles14:34 → 14:0023:3948 min00:390 min9 Mar
Chicago16:34 → 16:0023:3748 min00:360 min9 Mar
Jersey City17:34 → 17:0023:4248 min00:420 min9 Mar
Port of Spain18:34 → 17:0023:5248 min23:520 min9 Mar
London22:34 → 21:0023:4648 min23:460 min9 Mar
Durban00:34 → 23:0023:420 min23:420 min9 Mar
Dubai02:34 → 01:0000:050 min00:0548 min10 Mar
Delhi04:04 → 02:3000:070 min00:0748 min10 Mar
Kolkata04:04 → 02:3023:230 min23:2348 min10 Mar
Singapore06:34 → 05:0000:510 min00:5148 min10 Mar
Sydney09:34 → 08:0000:420 min00:4248 min10 Mar
Suva10:34 → 09:0023:530 min23:5348 min10 Mar
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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