Ruling · Guru Pūrṇimā · 1991

Friday 26 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 576 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 26 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 13:00  13:48 madhyāhna ends
12:1212:3613:0013:2413:4814:1214:36

48 of 48 minutes covered

Midday of Saturday 27 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 13:00  13:48 madhyāhna ends
12:1212:3613:0013:2413:4814:1214:36

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 01:02 on Fri 26 Jul to 03:24 on Sat 27 Jul.

    1991-07-25T16:02:12Z → 1991-07-26T18:24:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 13:00–13:48 on the 26th, 13:00–13:48 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 48 of 48 minutes on the 26th and 0 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 34562 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1991: Friday 26 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1991 falls on Friday 26 July. Pūrṇimā runs from 01:02 on Fri 26 Jul to 03:24 on Sat 27 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1991/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 26 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 26 Jul
compat-drikpanchangComparison profileFri 26 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles09:02 → 11:2412:3548 min12:350 min25 Jul
Chicago11:02 → 13:2412:3348 min12:3348 min26 Jul
Jersey City12:02 → 14:2412:3948 min12:3948 min26 Jul
Port of Spain12:02 → 14:2411:4934 min11:4948 min26 Jul
London17:02 → 19:2412:430 min12:4348 min26 Jul
Durban18:02 → 20:2411:380 min11:3848 min26 Jul
Dubai20:02 → 22:2412:010 min12:0148 min26 Jul
Delhi21:32 → 23:5412:030 min12:0348 min26 Jul
Kolkata21:32 → 23:5411:190 min11:1948 min26 Jul
Singapore00:02 → 02:2412:470 min12:4748 min26 Jul
Sydney02:02 → 04:2411:380 min11:3848 min26 Jul
Suva04:02 → 06:2411:490 min11:4948 min26 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