Ruling · Māghī Pūrṇimā · 1980

Thursday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 107 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Thursday 31 January

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

48 of 48 minutes covered

Midday of Friday 1 February

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

0 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 08:50 on Thu 31 Jan to 10:21 on Fri 1 Feb.

    1980-01-31T00:49:50Z → 1980-02-01T02:21:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 31st, 12:08–12:56 on the 1st.

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

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 31st and 0 of 48 on the 1st.

    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 6398 s

  5. 05

    Ruling

    Māghī Pūrṇimā, Baoding, 1980: Thursday 31 January.

    confidence: determinate

Say it like this

In Baoding, Māghī Pūrṇimā 1980 falls on Thursday 31 January. Pūrṇimā runs from 08:50 on Thu 31 Jan to 10:21 on Fri 1 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1980/maghi-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 31 Jan
compat-drikpanchangComparison profileThu 31 Jan
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/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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles16:50 → 18:2111:4348 min11:430 min31 Jan
Chicago18:50 → 20:2111:4048 min11:400 min31 Jan
Jersey City19:50 → 21:2111:4648 min11:460 min31 Jan
Port of Spain20:50 → 22:2111:5648 min11:560 min31 Jan
London00:50 → 02:2111:5048 min11:500 min31 Jan
Durban02:50 → 04:2111:4548 min11:450 min31 Jan
Dubai04:50 → 06:2112:0848 min12:080 min31 Jan
Delhi06:20 → 07:5112:1148 min12:110 min31 Jan
Kolkata06:20 → 07:5111:2648 min11:260 min31 Jan
Singapore08:20 → 09:5112:2448 min12:240 min31 Jan
Sydney11:50 → 13:2112:4448 min12:4437 min1 Feb
Suva12:50 → 14:2111:550 min11:5648 min1 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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