Ruling · Guru Pūrṇimā · 2016

Tuesday 19 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 252 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 Tuesday 19 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 Wednesday 20 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 07:10 on Tue 19 Jul to 06:57 on Wed 20 Jul.

    2016-07-18T23:10:23Z → 2016-07-19T22:56:35Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 19th, 11:22–12:10 on the 20th.

    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 19th and 0 of 48 on the 20th.

    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 15096 s

  5. 05

    Ruling

    Guru Pūrṇimā, Daqing, 2016: Tuesday 19 July.

    confidence: determinate

Say it like this

In Daqing, Guru Pūrṇimā 2016 falls on Tuesday 19 July. Pūrṇimā runs from 07:10 on Tue 19 Jul to 06:57 on Wed 20 Jul and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2016/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 19 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 19 Jul
compat-drikpanchangComparison profileTue 19 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles16:10 → 15:5712:350 min12:3548 min19 Jul
Chicago18:10 → 17:5712:330 min12:3348 min19 Jul
Jersey City19:10 → 18:5712:380 min12:3848 min19 Jul
Port of Spain19:10 → 18:5711:480 min11:4848 min19 Jul
London00:10 → 23:5712:420 min12:4248 min19 Jul
Durban01:10 → 00:5711:380 min11:3848 min19 Jul
Dubai03:10 → 02:5712:010 min12:0148 min19 Jul
Delhi04:40 → 04:2712:030 min12:0348 min19 Jul
Kolkata04:40 → 04:2711:190 min11:1948 min19 Jul
Singapore07:10 → 06:5712:470 min12:4748 min19 Jul
Sydney09:10 → 08:5711:380 min11:3848 min19 Jul
Suva11:10 → 10:5711:490 min11:4948 min19 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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