Ruling · Guru Pūrṇimā · 1918

Tuesday 23 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 337 minutes.

Decide it for

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 Tuesday 23 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 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

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 06:23 on Tue 23 Jul to 04:34 on Wed 24 Jul.

    1918-07-22T22:22:54Z → 1918-07-23T20:34:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 23rd, 12:00–12:48 on the 24th.

    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 23rd and 0 of 48 on the 24th.

    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 20237 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1918: Tuesday 23 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1918 falls on Tuesday 23 July. Pūrṇimā runs from 06:23 on Tue 23 Jul to 04:34 on Wed 24 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1918/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 23 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 23 Jul
compat-drikpanchangComparison profileTue 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles15:23 → 13:3412:350 min12:3548 min23 Jul
Chicago17:23 → 15:3412:330 min12:3348 min23 Jul
Jersey City18:23 → 16:3412:380 min12:3848 min23 Jul
Port of Spain18:23 → 16:3411:480 min11:4848 min23 Jul
London23:23 → 21:3412:420 min12:4248 min23 Jul
Durban00:23 → 22:3411:380 min11:3848 min23 Jul
Dubai02:04 → 00:1511:420 min11:4248 min23 Jul
Delhi03:53 → 02:0412:030 min12:0348 min23 Jul
Kolkata03:53 → 02:0411:190 min11:1948 min23 Jul
Singapore05:23 → 03:3411:470 min11:4748 min23 Jul
Sydney08:23 → 06:3411:380 min11:3848 min23 Jul
Suva10:23 → 08:3411:490 min11:4948 min23 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