Ruling · Māghī Pūrṇimā · 1987

Friday 13 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 431 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 Friday 13 February

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:09  12:57 madhyāhna ends
11:2111:4512:0912:3312:5713:2113:45

48 of 48 minutes covered

Midday of Saturday 14 February

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:09  12:57 madhyāhna ends
11:2111:4512:0912:3312:5713:2113:45

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 03:16 on Fri 13 Feb to 04:58 on Sat 14 Feb.

    1987-02-12T19:16:29Z → 1987-02-13T20:57:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 13th, 12:09–12:57 on the 14th.

    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 13th and 0 of 48 on the 14th.

    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 25844 s

  5. 05

    Ruling

    Māghī Pūrṇimā, Baoding, 1987: Friday 13 February.

    confidence: determinate

Say it like this

In Baoding, Māghī Pūrṇimā 1987 falls on Friday 13 February. Pūrṇimā runs from 03:16 on Fri 13 Feb to 04:58 on Sat 14 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/maghi-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 13 Feb
compat-drikpanchangComparison profileFri 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles11:16 → 12:5811:4348 min11:4348 min13 Feb
Chicago13:16 → 14:5811:410 min11:4148 min13 Feb
Jersey City14:16 → 15:5811:470 min11:4748 min13 Feb
Port of Spain15:16 → 16:5811:560 min11:5648 min13 Feb
London19:16 → 20:5811:510 min11:5148 min13 Feb
Durban21:16 → 22:5811:460 min11:4648 min13 Feb
Dubai23:16 → 00:5812:090 min12:0948 min13 Feb
Delhi00:46 → 02:2812:120 min12:1248 min13 Feb
Kolkata00:46 → 02:2811:270 min11:2748 min13 Feb
Singapore03:16 → 04:5812:550 min12:5548 min13 Feb
Sydney06:16 → 07:5812:450 min12:4548 min13 Feb
Suva07:16 → 08:5811:560 min11:5648 min13 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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