Ruling · Guru Pūrṇimā · 2091

Monday 30 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 434 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 Sunday 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

Midday of Monday 30 July

Taken. The only midday Pūrṇimā reaches.

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

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 20:46 on Sun 29 Jul to 20:03 on Mon 30 Jul.

    2091-07-29T12:46:04Z → 2091-07-30T12:02:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 29th, 12:01–12:49 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 26044 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 2091: Monday 30 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 2091 falls on Monday 30 July. Pūrṇimā runs from 20:46 on Sun 29 Jul to 20:03 on Mon 30 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2091/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 30 Jul
compat-drikpanchangComparison profileMon 30 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles05:46 → 05:0312:3648 min12:360 min29 Jul
Chicago07:46 → 07:0312:3348 min12:330 min29 Jul
Jersey City08:46 → 08:0312:3948 min12:390 min29 Jul
Port of Spain08:46 → 08:0311:4948 min11:490 min29 Jul
London13:46 → 13:0312:430 min12:4320 min30 Jul
Durban14:46 → 14:0311:390 min11:3948 min30 Jul
Dubai16:46 → 16:0312:020 min12:0248 min30 Jul
Delhi18:16 → 17:3312:040 min12:0448 min30 Jul
Kolkata18:16 → 17:3311:190 min11:1948 min30 Jul
Singapore20:46 → 20:0312:480 min12:4748 min30 Jul
Sydney22:46 → 22:0311:380 min11:3848 min30 Jul
Suva00:46 → 00:0311:490 min11:4948 min30 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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