Ruling · Guru Pūrṇimā · 1904

Wednesday 27 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 201 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 26 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 27 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 16:09 on Tue 26 Jul to 17:42 on Wed 27 Jul.

    1904-07-26T08:09:19Z → 1904-07-27T09:41:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 26th, 12:00–12:48 on the 27th.

    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 26th and 48 of 48 on the 27th.

    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 12068 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1904: Wednesday 27 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1904 falls on Wednesday 27 July. Pūrṇimā runs from 16:09 on Tue 26 Jul to 17:42 on Wed 27 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1904/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 27 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 27 Jul
compat-drikpanchangComparison profileWed 27 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles00:09 → 01:4211:3548 min11:350 min26 Jul
Chicago02:09 → 03:4211:3348 min11:330 min26 Jul
Jersey City03:09 → 04:4211:3848 min11:380 min26 Jul
Port of Spain04:09 → 05:4211:4848 min11:480 min26 Jul
London08:09 → 09:4211:4248 min11:420 min26 Jul
Durban10:09 → 11:4211:3848 min11:383 min27 Jul
Dubai11:50 → 13:2311:4240 min11:4248 min27 Jul
Delhi13:30 → 15:0311:540 min11:5448 min27 Jul
Kolkata13:30 → 15:0311:100 min11:1048 min27 Jul
Singapore15:04 → 16:3711:420 min11:4248 min27 Jul
Sydney18:09 → 19:4211:380 min11:3848 min27 Jul
Suva20:04 → 21:3711:440 min11:4448 min27 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