Ruling · Mahāśivarātri · 1907

Monday 11 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 200 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 10 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 Monday 11 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 07:03 on Mon 11 Feb to 04:16 on Tue 12 Feb.

    1907-02-10T23:02:44Z → 1907-02-11T20:16:23Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 10th, 00:08–00:56 on the 11th.

    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 10th and 48 of 48 on the 11th.

    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 12008 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1907: Monday 11 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri 1907 falls on Monday 11 February. Caturdaśī runs from 07:03 on Mon 11 Feb to 04:16 on Tue 12 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1907/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 11 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 11 Feb
compat-drikpanchangComparison profileMon 11 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 10thCoveredNiśītha 11thCoveredRuled
Los Angeles15:03 → 12:1623:4348 min23:430 min10 Feb
Chicago17:03 → 14:1623:4148 min23:410 min10 Feb
Jersey City18:03 → 15:1623:4648 min23:460 min10 Feb
Port of Spain19:03 → 16:1623:5648 min23:560 min10 Feb
London23:03 → 20:1623:5048 min23:500 min10 Feb
Durban01:03 → 22:1623:460 min23:460 min10 Feb
Dubai02:44 → 23:5723:500 min23:507 min11 Feb
Delhi04:33 → 01:4600:110 min00:1148 min11 Feb
Kolkata04:33 → 01:4623:270 min23:2748 min11 Feb
Singapore06:03 → 03:1623:550 min23:5548 min11 Feb
Sydney09:03 → 06:1623:460 min23:4648 min11 Feb
Suva10:58 → 08:1123:520 min23:5248 min11 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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