Ruling · Mahāśivarātri · 1939

Friday 17 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 601 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 Friday 17 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 Saturday 18 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

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 11:37 on Fri 17 Feb to 14:07 on Sat 18 Feb.

    1939-02-17T03:36:51Z → 1939-02-18T06:07:04Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 00:08–00:56 on the 17th, 00:08–00:56 on the 18th.

    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 17th and 0 of 48 on the 18th.

    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 36051 s

  5. 05

    Ruling

    Mahāśivarātri, Baoding, 1939: Friday 17 February.

    confidence: determinate

Say it like this

In Baoding, Mahāśivarātri 1939 falls on Friday 17 February. Caturdaśī runs from 11:37 on Fri 17 Feb to 14:07 on Sat 18 Feb and covers all of niśītha that night.

ahargana.org/baoding/festivals/1939/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 17 Feb
compat-drikpanchangComparison profileFri 17 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 17thCoveredNiśītha 18thCoveredRuled
Los Angeles19:37 → 22:0723:430 min23:430 min16 Feb
Chicago21:37 → 00:0723:4027 min23:400 min16 Feb
Jersey City22:37 → 01:0723:4648 min23:460 min16 Feb
Port of Spain23:37 → 02:0723:5648 min23:560 min16 Feb
London03:37 → 06:0723:5048 min23:500 min17 Feb
Durban05:37 → 08:0723:4648 min23:460 min17 Feb
Dubai07:37 → 10:0700:0948 min00:090 min17 Feb
Delhi09:07 → 11:3700:1148 min00:110 min17 Feb
Kolkata09:07 → 11:3723:2748 min23:260 min17 Feb
Singapore10:57 → 13:2700:1548 min00:150 min17 Feb
Sydney13:37 → 16:0723:4648 min23:450 min17 Feb
Suva15:37 → 18:0723:5748 min23:570 min17 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