Ruling · Mahāśivarātri (Shivratri) · 2016

Monday 7 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 456 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 Monday 7 March

Taken. The only night Caturdaśī reaches.

niśītha begins 23:26  00:14 niśītha ends
22:3823:0223:2623:5000:1400:3801:02

48 of 48 minutes covered

Night of Tuesday 8 March

Caturdaśī is absent from niśītha. Not taken.

niśītha begins 23:26  00:14 niśītha ends
22:3823:0223:2623:5000:1400:3801:02

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 15:51 on Mon 7 Mar to 13:04 on Tue 8 Mar.

    2016-03-07T07:50:45Z → 2016-03-08T05:04:04Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:26–00:14 on the 7th, 23:26–00:14 on the 8th.

    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 7th and 0 of 48 on the 8th.

    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 27341 s

  5. 05

    Ruling

    Mahāśivarātri, Daqing, 2016: Monday 7 March.

    confidence: determinate

Say it like this

In Daqing, Mahāśivarātri (Shivratri) 2016 falls on Monday 7 March. Caturdaśī runs from 15:51 on Mon 7 Mar to 13:04 on Tue 8 Mar and covers all of niśītha that night.

ahargana.org/daqing/festivals/2016/maha-shivaratri · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 7 Mar
Ahargaṇa, classicalDisc centre, no refractionMon 7 Mar
compat-drikpanchangComparison profileMon 7 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 7thCoveredNiśītha 8thCoveredRuled
Los Angeles23:51 → 21:0423:390 min23:390 min6 Mar
Chicago01:51 → 23:0423:370 min23:370 min6 Mar
Jersey City02:51 → 00:0423:4321 min23:420 min7 Mar
Port of Spain03:51 → 01:0423:5348 min23:520 min7 Mar
London07:51 → 05:0423:4748 min23:470 min7 Mar
Durban09:51 → 07:0423:4348 min23:430 min7 Mar
Dubai11:51 → 09:0400:0548 min00:050 min7 Mar
Delhi13:21 → 10:3400:0848 min00:070 min7 Mar
Kolkata13:21 → 10:3423:2348 min23:230 min7 Mar
Singapore15:51 → 13:0400:5148 min00:510 min7 Mar
Sydney18:51 → 16:0400:4248 min00:420 min7 Mar
Suva19:51 → 17:0423:5348 min23:530 min7 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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