Ruling · Guru Pūrṇimā · 2053

Wednesday 30 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 616 minutes.

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 Wednesday 30 July

Taken. The only midday Pūrṇimā reaches.

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

48 of 48 minutes covered

Midday of Thursday 31 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
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 22:52 on Tue 29 Jul to 01:06 on Thu 31 Jul.

    2053-07-29T14:52:04Z → 2053-07-30T17:06:26Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 30th, 11:22–12:10 on the 31st.

    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 30th and 0 of 48 on the 31st.

    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 36942 s

  5. 05

    Ruling

    Guru Pūrṇimā, Daqing, 2053: Wednesday 30 July.

    confidence: determinate

Say it like this

In Daqing, Guru Pūrṇimā 2053 falls on Wednesday 30 July. Pūrṇimā runs from 22:52 on Tue 29 Jul to 01:06 on Thu 31 Jul and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2053/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 30 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 30 Jul
compat-drikpanchangComparison profileWed 30 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles07:52 → 10:0612:3548 min12:350 min29 Jul
Chicago09:52 → 12:0612:3348 min12:330 min29 Jul
Jersey City10:52 → 13:0612:3948 min12:3928 min30 Jul
Port of Spain10:52 → 13:0611:4948 min11:4948 min30 Jul
London15:52 → 18:0612:430 min12:4348 min30 Jul
Durban16:52 → 19:0611:390 min11:3948 min30 Jul
Dubai18:52 → 21:0612:010 min12:0148 min30 Jul
Delhi20:22 → 22:3612:040 min12:0348 min30 Jul
Kolkata20:22 → 22:3611:190 min11:1948 min30 Jul
Singapore22:52 → 01:0612:470 min12:4748 min30 Jul
Sydney00:52 → 03:0611:380 min11:3848 min30 Jul
Suva02:52 → 05:0611:490 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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