Ruling · Guru Pūrṇimā · 2008

Friday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 92 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 Thursday 17 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 of 48 minutes covered

Midday of Friday 18 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

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 14:20 on Thu 17 Jul to 15:59 on Fri 18 Jul.

    2008-07-17T06:20:10Z → 2008-07-18T07:59:05Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 17th, 12:00–12:48 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 5523 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 2008: Friday 18 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 2008 falls on Friday 18 July. Pūrṇimā runs from 14:20 on Thu 17 Jul to 15:59 on Fri 18 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2008/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 18 Jul
compat-drikpanchangComparison profileFri 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles23:20 → 00:5912:3548 min12:350 min17 Jul
Chicago01:20 → 02:5912:3348 min12:330 min17 Jul
Jersey City02:20 → 03:5912:3848 min12:380 min17 Jul
Port of Spain02:20 → 03:5911:4848 min11:480 min17 Jul
London07:20 → 08:5912:4248 min12:420 min17 Jul
Durban08:20 → 09:5911:3848 min11:380 min17 Jul
Dubai10:20 → 11:5912:0148 min12:010 min17 Jul
Delhi11:50 → 13:2912:0348 min12:0348 min18 Jul
Kolkata11:50 → 13:2911:1916 min11:1948 min18 Jul
Singapore14:20 → 15:5912:470 min12:4748 min18 Jul
Sydney16:20 → 17:5911:370 min11:3848 min18 Jul
Suva18:20 → 19:5911:490 min11:4948 min18 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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