Ruling · Guru Pūrṇimā · 1998

Thursday 9 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 674 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 8 July

Pūrṇimā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Thursday 9 July

Taken. The only midday Pūrṇimā reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

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 00:25 on Thu 9 Jul to 00:01 on Fri 10 Jul.

    1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 8th, 11:59–12:47 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 40424 s

  5. 05

    Ruling

    Guru Pūrṇimā, Baoding, 1998: Thursday 9 July.

    confidence: determinate

Say it like this

In Baoding, Guru Pūrṇimā 1998 falls on Thursday 9 July. Pūrṇimā runs from 00:25 on Thu 9 Jul to 00:01 on Fri 10 Jul and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1998/guru-purnima · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 9 Jul
compat-drikpanchangComparison profileThu 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles09:25 → 09:0112:3448 min12:340 min8 Jul
Chicago11:25 → 11:0112:3248 min12:320 min8 Jul
Jersey City12:25 → 12:0112:3748 min12:370 min8 Jul
Port of Spain12:25 → 12:0111:4710 min11:4714 min9 Jul
London17:25 → 17:0112:410 min12:4148 min9 Jul
Durban18:25 → 18:0111:370 min11:3748 min9 Jul
Dubai20:25 → 20:0112:000 min12:0048 min9 Jul
Delhi21:55 → 21:3112:020 min12:0248 min9 Jul
Kolkata21:55 → 21:3111:170 min11:1848 min9 Jul
Singapore00:25 → 00:0112:460 min12:4648 min9 Jul
Sydney02:25 → 02:0111:360 min11:3648 min9 Jul
Suva04:25 → 04:0111:470 min11:4748 min9 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