Ruling · Guru Pūrṇimā · 2083

Wednesday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 31 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 Wednesday 28 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:01  12:49 madhyāhna ends
Pūrṇimā begins 11:30:00
11:1311:3712:0112:2512:4913:1313:37

48 of 48 minutes covered

Midday of Thursday 29 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:01  12:49 madhyāhna ends
11:1311:3712:0112:2512:4913:1313:37

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 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul.

    2083-07-28T03:30:01Z → 2083-07-29T01:02:09Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 28th, 12:01–12:49 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 1847 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 2083: Wednesday 28 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 2083 falls on Wednesday 28 July. Pūrṇimā runs from 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2083/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 28 Jul
compat-drikpanchangComparison profileWed 28 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 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles20:30 → 18:0212:3648 min12:360 min28 Jul
Chicago22:30 → 20:0212:3348 min12:330 min28 Jul
Jersey City23:30 → 21:0212:3948 min12:390 min28 Jul
Port of Spain23:30 → 21:0211:4948 min11:490 min28 Jul
London04:30 → 02:0212:4348 min12:430 min28 Jul
Durban05:30 → 03:0211:3948 min11:390 min28 Jul
Dubai07:30 → 05:0212:0248 min12:020 min28 Jul
Delhi09:00 → 06:3212:0448 min12:040 min28 Jul
Kolkata09:00 → 06:3211:1948 min11:190 min28 Jul
Singapore11:30 → 09:0212:4848 min12:470 min28 Jul
Sydney13:30 → 11:0211:380 min11:380 min29 Jul
Suva15:30 → 13:0211:490 min11:4948 min29 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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