Ruling · Mahāśivarātri · 2049

Tuesday 2 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 577 minutes.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Tuesday 2 March

Taken. The only night Caturdaśī reaches.

niśītha begins 23:28  00:16 niśītha ends
22:4023:0423:2823:5200:1600:4001:04

48 of 48 minutes covered

Night of Wednesday 3 March

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 23:27  00:15 niśītha ends
22:3923:0323:2723:5100:1500:3901:03

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 13:51 on Tue 2 Mar to 10:55 on Wed 3 Mar.

    2049-03-02T05:50:46Z → 2049-03-03T02:54:58Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:28–00:16 on the 2nd, 23:27–00:15 on the 3rd.

    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 2nd and 0 of 48 on the 3rd.

    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 34607 s

  5. 05

    Ruling

    Mahāśivarātri, Daqing, 2049: Tuesday 2 March.

    confidence: determinate

Say it like this

In Daqing, Mahāśivarātri 2049 falls on Tuesday 2 March. Caturdaśī runs from 13:51 on Tue 2 Mar to 10:55 on Wed 3 Mar and covers all of niśītha that night.

ahargana.org/daqing/festivals/2049/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 2 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 2 Mar
compat-drikpanchangComparison profileTue 2 Mar
No institution has a recorded ruling for Daqing.

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 2ndCoveredNiśītha 3rdCoveredRuled
Los Angeles21:51 → 18:5523:410 min23:400 min1 Mar
Chicago23:51 → 20:5523:380 min23:380 min1 Mar
Jersey City00:51 → 21:5523:440 min23:440 min1 Mar
Port of Spain01:51 → 22:5523:540 min23:540 min1 Mar
London05:51 → 02:5523:4848 min23:480 min2 Mar
Durban07:51 → 04:5523:4448 min23:440 min2 Mar
Dubai09:51 → 06:5500:0748 min00:060 min2 Mar
Delhi11:21 → 08:2500:0948 min00:090 min2 Mar
Kolkata11:21 → 08:2523:2448 min23:240 min2 Mar
Singapore13:51 → 10:5500:5348 min00:520 min2 Mar
Sydney16:51 → 13:5500:4348 min00:430 min2 Mar
Suva17:51 → 14:5523:5448 min23:540 min2 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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