Ruling · Guru Pūrṇimā · 2013

Monday 22 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 359 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 Monday 22 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

Midday of Tuesday 23 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

Pūrṇimā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 06:02 on Mon 22 Jul to 02:16 on Tue 23 Jul.

    2013-07-21T22:01:48Z → 2013-07-22T18:15:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 22nd, 12:00–12:48 on the 23rd.

    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 22nd and 0 of 48 on the 23rd.

    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 21513 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 2013: Monday 22 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 2013 falls on Monday 22 July. Pūrṇimā runs from 06:02 on Mon 22 Jul to 02:16 on Tue 23 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2013/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 22 Jul
compat-drikpanchangComparison profileMon 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles15:02 → 11:1612:350 min12:350 min22 Jul
Chicago17:02 → 13:1612:330 min12:3343 min22 Jul
Jersey City18:02 → 14:1612:380 min12:3948 min22 Jul
Port of Spain18:02 → 14:1611:480 min11:4848 min22 Jul
London23:02 → 19:1612:420 min12:4348 min22 Jul
Durban00:02 → 20:1611:380 min11:3848 min22 Jul
Dubai02:02 → 22:1612:010 min12:0148 min22 Jul
Delhi03:32 → 23:4612:030 min12:0348 min22 Jul
Kolkata03:32 → 23:4611:190 min11:1948 min22 Jul
Singapore06:02 → 02:1612:470 min12:4748 min22 Jul
Sydney08:02 → 04:1611:380 min11:3848 min22 Jul
Suva10:02 → 06:1611:490 min11:4948 min22 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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