Ruling · Guru Pūrṇimā · 1973

Sunday 15 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 290 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 Saturday 14 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 Sunday 15 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 17:38 on Sat 14 Jul to 19:56 on Sun 15 Jul.

    1973-07-14T09:38:09Z → 1973-07-15T11:55:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 14th, 12:00–12:48 on the 15th.

    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 14th and 48 of 48 on the 15th.

    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 17427 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1973: Sunday 15 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1973 falls on Sunday 15 July. Pūrṇimā runs from 17:38 on Sat 14 Jul to 19:56 on Sun 15 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 15 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 15 Jul
compat-drikpanchangComparison profileSun 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles02:38 → 04:5612:3548 min12:350 min14 Jul
Chicago04:38 → 06:5612:3248 min12:320 min14 Jul
Jersey City05:38 → 07:5612:3848 min12:380 min14 Jul
Port of Spain05:38 → 07:5611:4848 min11:480 min14 Jul
London10:38 → 12:5612:4248 min12:4214 min15 Jul
Durban11:38 → 13:5611:3848 min11:3848 min15 Jul
Dubai13:38 → 15:5612:000 min12:0148 min15 Jul
Delhi15:08 → 17:2612:030 min12:0348 min15 Jul
Kolkata15:08 → 17:2611:180 min11:1848 min15 Jul
Singapore17:08 → 19:2612:160 min12:1648 min15 Jul
Sydney19:38 → 21:5611:370 min11:3748 min15 Jul
Suva21:38 → 23:5611:480 min11:4848 min15 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

About Ahargaṇa