Ruling · Mahāśivarātri (Shivratri) · 2009

Monday 23 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 359 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 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

Night of Monday 23 February

Taken. The only night Caturdaśī reaches.

niśītha begins 00:07  00:55 niśītha ends
23:1923:4300:0700:3100:5501:1901:43

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 06:54 on Mon 23 Feb to 08:30 on Tue 24 Feb.

    2009-02-22T22:53:50Z → 2009-02-24T00:30:03Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:07–00:55 on the 22nd, 00:07–00:55 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

    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 21515 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 2009: Monday 23 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri (Shivratri) 2009 falls on Monday 23 February. Caturdaśī runs from 06:54 on Mon 23 Feb to 08:30 on Tue 24 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/2009/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 23 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 23 Feb
compat-drikpanchangComparison profileMon 23 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 22ndCoveredNiśītha 24thCoveredRuled
Los Angeles14:54 → 16:3023:4248 min23:420 min22 Feb
Chicago16:54 → 18:3023:4048 min23:390 min22 Feb
Jersey City17:54 → 19:3023:4548 min23:450 min22 Feb
Port of Spain18:54 → 20:3023:5548 min23:550 min22 Feb
London22:54 → 00:3023:4948 min23:490 min22 Feb
Durban00:54 → 02:3023:450 min23:450 min23 Feb
Dubai02:54 → 04:3000:080 min00:080 min23 Feb
Delhi04:24 → 06:0000:100 min00:100 min23 Feb
Kolkata04:24 → 06:0023:260 min23:260 min23 Feb
Singapore06:54 → 08:3000:540 min00:540 min23 Feb
Sydney09:54 → 11:3000:450 min00:450 min23 Feb
Suva10:54 → 12:3023:560 min23:560 min23 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