Ruling · Guru Pūrṇimā · 2025

Thursday 10 July

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 602 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 10 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

48 of 48 minutes covered

Midday of Friday 11 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

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 01:37 on Thu 10 Jul to 02:07 on Fri 11 Jul.

    2025-07-09T20:07:26Z → 2025-07-10T20:36:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 10th, 12:08–12:56 on the 11th.

    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 10th and 0 of 48 on the 11th.

    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 36094 s

  5. 05

    Ruling

    Guru Pūrṇimā, Ujjain, 2025: Thursday 10 July.

    confidence: determinate

Say it like this

In Ujjain, Guru Pūrṇimā 2025 falls on Thursday 10 July. Pūrṇimā runs from 01:37 on Thu 10 Jul to 02:07 on Fri 11 Jul and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2025/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 10 Jul
compat-drikpanchangComparison profileThu 10 Jul
No institution has a recorded ruling for Ujjain.

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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles13:07 → 13:3712:3415 min12:3448 min10 Jul
Chicago15:07 → 15:3712:320 min12:3248 min10 Jul
Jersey City16:07 → 16:3712:370 min12:3848 min10 Jul
Port of Spain16:07 → 16:3711:470 min11:4848 min10 Jul
London21:07 → 21:3712:420 min12:4248 min10 Jul
Durban22:07 → 22:3711:370 min11:3748 min10 Jul
Dubai00:07 → 00:3712:000 min12:0048 min10 Jul
Delhi01:37 → 02:0712:020 min12:0248 min10 Jul
Kolkata01:37 → 02:0711:180 min11:1848 min10 Jul
Singapore04:07 → 04:3712:460 min12:4648 min10 Jul
Sydney06:07 → 06:3711:360 min11:3748 min10 Jul
Suva08:07 → 08:3711:480 min11:4848 min10 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