Ruling · Guru Pūrṇimā · 2031

Friday 4 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 306 minutes.

Decide it for

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 4 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

48 of 48 minutes covered

Midday of Saturday 5 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul.

    2031-07-03T22:52:15Z → 2031-07-04T19:01:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 4th, 11:59–12:47 on the 5th.

    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 4th and 0 of 48 on the 5th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

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

    priority: paraviddha → only-day · margin 18370 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 2031: Friday 4 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 2031 falls on Friday 4 July. Pūrṇimā runs from 06:52 on Fri 4 Jul to 03:01 on Sat 5 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2031/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 4 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 4 Jul
compat-drikpanchangComparison profileFri 4 Jul
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/guru-purnima · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāMadhyāhna 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles15:52 → 12:0112:330 min12:330 min4 Jul
Chicago17:52 → 14:0112:310 min12:3148 min4 Jul
Jersey City18:52 → 15:0112:360 min12:3748 min4 Jul
Port of Spain18:52 → 15:0111:460 min11:4748 min4 Jul
London23:52 → 20:0112:410 min12:4148 min4 Jul
Durban00:52 → 21:0111:360 min11:3648 min4 Jul
Dubai02:52 → 23:0111:590 min11:5948 min4 Jul
Delhi04:22 → 00:3112:010 min12:0148 min4 Jul
Kolkata04:22 → 00:3111:170 min11:1748 min4 Jul
Singapore06:52 → 03:0112:450 min12:4548 min4 Jul
Sydney08:52 → 05:0111:350 min11:3648 min4 Jul
Suva10:52 → 07:0111:470 min11:4748 min4 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
guru-purnima@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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