Ruling · Guru Pūrṇimā · 1907

Thursday 25 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 Wednesday 24 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 Thursday 25 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
Pūrṇimā ends 12:29:20
11:1211:3612:0012:2412:4813:1213:36

29 of 48 minutes covered, the first 29

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 16:11 on Wed 24 Jul to 12:29 on Thu 25 Jul.

    1907-07-24T08:10:37Z → 1907-07-25T04:29:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 24th, 12:00–12:48 on the 25th.

    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 24th and 29 of 48 on the 25th.

    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 1131 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1907: Thursday 25 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1907 falls on Thursday 25 July. Pūrṇimā runs from 16:11 on Wed 24 Jul to 12:29 on Thu 25 Jul and covers 29 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1907/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 25 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 25 Jul
compat-drikpanchangComparison profileThu 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles00:11 → 20:2911:3548 min11:350 min24 Jul
Chicago02:11 → 22:2911:3348 min11:330 min24 Jul
Jersey City03:11 → 23:2911:3848 min11:380 min24 Jul
Port of Spain04:11 → 00:2911:4848 min11:480 min24 Jul
London08:11 → 04:2911:4248 min11:420 min24 Jul
Durban10:11 → 06:2911:3848 min11:380 min24 Jul
Dubai11:52 → 08:1011:4238 min11:420 min24 Jul
Delhi13:41 → 09:5912:030 min12:030 min25 Jul
Kolkata13:41 → 09:5911:190 min11:190 min25 Jul
Singapore15:11 → 11:2911:470 min11:470 min25 Jul
Sydney18:11 → 14:2911:380 min11:3848 min25 Jul
Suva20:06 → 16:2411:440 min11:4448 min25 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