Ruling · Māghī Pūrṇimā · 2008

Wednesday 20 February

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 1 min 06 s away. Say “contested”.

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 Wednesday 20 February

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
Pūrṇimā begins 12:09:22
11:2011:4412:0812:3212:5613:2013:44

47 of 48 minutes covered, the last 47

Midday of Thursday 21 February

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
Pūrṇimā ends 11:30:30
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 12:09 on Wed 20 Feb to 11:31 on Thu 21 Feb.

    2008-02-20T04:09:22Z → 2008-02-21T03:30:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 20th, 12:08–12:56 on the 21st.

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

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 47 of 48 minutes on the 20th and 0 of 48 on the 21st.

    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 66 s < 300 s

  5. 05

    Ruling

    Māghī Pūrṇimā, Baoding, 2008: Wednesday 20 February.

    confidence: boundary (margin)

Say it like this

In Baoding, Māghī Pūrṇimā 2008 falls on Wednesday 20 February. Pūrṇimā runs from 12:09 on Wed 20 Feb to 11:31 on Thu 21 Feb and covers 47 of 48 minutes of madhyāhna that midday. It is 1 min 06 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/2008/maghi-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 20 Feb
compat-drikpanchangComparison profileThu 21 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/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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles20:09 → 19:3111:4348 min11:430 min20 Feb
Chicago22:09 → 21:3111:4148 min11:410 min20 Feb
Jersey City23:09 → 22:3111:4648 min11:460 min20 Feb
Port of Spain00:09 → 23:3111:5648 min11:560 min20 Feb
London04:09 → 03:3111:5148 min11:510 min20 Feb
Durban06:09 → 05:3111:4548 min11:450 min20 Feb
Dubai08:09 → 07:3112:0948 min12:090 min20 Feb
Delhi09:39 → 09:0112:1148 min12:110 min20 Feb
Kolkata09:39 → 09:0111:2748 min11:260 min20 Feb
Singapore12:09 → 11:3112:5448 min12:540 min20 Feb
Sydney15:09 → 14:3112:450 min12:4548 min21 Feb
Suva16:09 → 15:3111:560 min11:5648 min21 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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