Ruling · Guru Pūrṇimā · 1999

Wednesday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 334 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 Tuesday 27 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Wednesday 28 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

48 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 18:22 on Tue 27 Jul to 19:25 on Wed 28 Jul.

    1999-07-27T10:22:07Z → 1999-07-28T11:24:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 27th, 12:00–12:48 on the 28th.

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

  3. 03

    Rule

    Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.

    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 20023 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1999: Wednesday 28 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1999 falls on Wednesday 28 July. Pūrṇimā runs from 18:22 on Tue 27 Jul to 19:25 on Wed 28 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1999/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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles03:22 → 04:2512:3548 min12:350 min27 Jul
Chicago05:22 → 06:2512:3348 min12:330 min27 Jul
Jersey City06:22 → 07:2512:3948 min12:390 min27 Jul
Port of Spain06:22 → 07:2511:4948 min11:490 min27 Jul
London11:22 → 12:2512:4348 min12:430 min27 Jul
Durban12:22 → 13:2511:394 min11:3848 min28 Jul
Dubai14:22 → 15:2512:010 min12:0148 min28 Jul
Delhi15:52 → 16:5512:030 min12:0348 min28 Jul
Kolkata15:52 → 16:5511:190 min11:1948 min28 Jul
Singapore18:22 → 19:2512:470 min12:4748 min28 Jul
Sydney20:22 → 21:2511:380 min11:3848 min28 Jul
Suva22:22 → 23:2511:490 min11:4948 min28 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

About Ahargaṇa