Ruling · Māghī Pūrṇimā · 1908

Monday 17 February

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 140 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Sunday 16 February

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:31  12:19 madhyāhna ends
10:4311:0711:3111:5512:1912:4313:07

0 of 48 minutes covered

Midday of Monday 17 February

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:31  12:19 madhyāhna ends
10:4311:0711:3111:5512:1912:4313:07

48 of 48 minutes covered

Pūrṇimā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 14:38 on Sun 16 Feb to 17:05 on Mon 17 Feb.

    1908-02-16T06:38:12Z → 1908-02-17T09:05:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 16th, 11:31–12:19 on the 17th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 8372 s

  5. 05

    Ruling

    Māghī Pūrṇimā, Daqing, 1908: Monday 17 February.

    confidence: determinate

Say it like this

In Daqing, Māghī Pūrṇimā 1908 falls on Monday 17 February. Pūrṇimā runs from 14:38 on Sun 16 Feb to 17:05 on Mon 17 Feb and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1908/maghi-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 17 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 17 Feb
compat-drikpanchangComparison profileMon 17 Feb
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/maghi-purnima · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 105

“S 15 Maghi purnima (paraviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles22:38 → 01:0511:4448 min11:430 min16 Feb
Chicago00:38 → 03:0511:4148 min11:410 min16 Feb
Jersey City01:38 → 04:0511:4748 min11:470 min16 Feb
Port of Spain02:38 → 05:0511:5648 min11:560 min16 Feb
London06:38 → 09:0511:5148 min11:510 min16 Feb
Durban08:38 → 11:0511:4648 min11:460 min16 Feb
Dubai10:19 → 12:4611:5048 min11:5048 min17 Feb
Delhi12:08 → 14:3512:1248 min12:1248 min17 Feb
Kolkata12:08 → 14:3511:277 min11:2748 min17 Feb
Singapore13:38 → 16:0511:550 min11:5548 min17 Feb
Sydney16:38 → 19:0511:450 min11:4548 min17 Feb
Suva18:33 → 21:0011:520 min11:5148 min17 Feb
Profile · tradition
pac-rp@2026.1 · smarta
Rule
maghi-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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