Ruling · Guru Pūrṇimā · 2082

Friday 10 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 9 min 56 s.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Thursday 9 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
Pūrṇimā begins 12:33:55
10:3310:5711:2111:4512:0912:3312:57

0 of 48 minutes covered

Midday of Friday 10 July

Taken. Pūrṇimā reaches neither midday; the rule takes the second day.

madhyāhna begins 11:22  12:10 madhyāhna ends
Pūrṇimā ends 11:11:39
10:3410:5811:2211:4612:1012:3412:58

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 12:34 on Thu 9 Jul to 11:12 on Fri 10 Jul.

    2082-07-09T04:33:56Z → 2082-07-10T03:11:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 9th, 11:22–12:10 on the 10th.

    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 9th and 0 of 48 on the 10th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: paraviddha → second-day · margin 596 s

  5. 05

    Ruling

    Guru Pūrṇimā, Daqing, 2082: Friday 10 July.

    confidence: determinate

Say it like this

In Daqing, Guru Pūrṇimā 2082 falls on Friday 10 July. Pūrṇimā runs from 12:34 on Thu 9 Jul to 11:12 on Fri 10 Jul, and reaches madhyāhna on neither day.

ahargana.org/daqing/festivals/2082/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 10 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 10 Jul
compat-drikpanchangComparison profileFri 10 Jul
No institution has a recorded ruling for Daqing.

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 Angeles21:34 → 20:1212:3548 min12:350 min9 Jul
Chicago23:34 → 22:1212:3248 min12:320 min9 Jul
Jersey City00:34 → 23:1212:3848 min12:380 min9 Jul
Port of Spain00:34 → 23:1211:4848 min11:480 min9 Jul
London05:34 → 04:1212:4248 min12:420 min9 Jul
Durban06:34 → 05:1211:3848 min11:380 min9 Jul
Dubai08:34 → 07:1212:0048 min12:010 min9 Jul
Delhi10:04 → 08:4212:0348 min12:030 min9 Jul
Kolkata10:04 → 08:4211:1848 min11:180 min9 Jul
Singapore12:34 → 11:1212:4648 min12:460 min9 Jul
Sydney14:34 → 13:1211:370 min11:3748 min10 Jul
Suva16:34 → 15:1211:480 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

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