Ruling · Kokilā Vrata · 2002

Tuesday 23 July

Boundaryin Baoding, under the Rashtriya Panchang method. Both late afternoons qualify and the rule does not say which to take. Say “contested”.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two late afternoons

One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.

Late afternoon of Tuesday 23 July

Taken. Both late afternoons qualify; the rule is silent, and this one is covered longer.

16:44 sāyāhna beginssunset 19:38
Pūrṇimā begins 16:57:55
16:2016:4417:0817:3217:5618:2018:4419:0819:3219:56

160 of 173 minutes covered, the last 160

Late afternoon of Wednesday 24 July

Qualifies with 23 of 173 minutes. Not taken.

16:44 sāyāhna beginssunset 19:37
Pūrṇimā ends 17:07:00
16:2016:4417:0817:3217:5618:2018:4419:0819:3219:56

23 of 173 minutes covered, the first 23

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 16:58 on Tue 23 Jul to 17:07 on Wed 24 Jul.

    2002-07-23T08:57:56Z → 2002-07-24T09:07:00Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:44–19:38 on the 23rd, 16:44–19:37 on the 24th.

    sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 160 of 173 minutes on the 23rd and 23 of 173 on the 24th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Both late afternoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 819 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2002: Tuesday 23 July.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Kokilā Vrata 2002 falls on Tuesday 23 July. Pūrṇimā runs from 16:58 on Tue 23 Jul to 17:07 on Wed 24 Jul and covers 160 of 173 minutes of sāyāhna that late afternoon. It also reaches the next late afternoon for 23 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/2002/kokila-vrata · 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/kokila-vrata · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Sāyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
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.

PlacePūrṇimāSāyāhna 23rdCoveredSāyāhna 24thCoveredRuled
Los Angeles01:58 → 02:0717:12168 min17:120 min23 Jul
Chicago03:58 → 04:0717:21176 min17:210 min23 Jul
Jersey City04:58 → 05:0717:25175 min17:250 min23 Jul
Port of Spain04:58 → 05:0716:00152 min16:000 min23 Jul
London09:58 → 10:0717:52190 min17:510 min23 Jul
Durban10:58 → 11:0715:12126 min15:120 min23 Jul
Dubai12:58 → 13:0716:27161 min16:270 min23 Jul
Delhi14:28 → 14:3716:33164 min16:330 min23 Jul
Kolkata14:28 → 14:3715:42159 min15:420 min23 Jul
Singapore16:58 → 17:0716:50138 min16:5017 min23 Jul
Sydney18:58 → 19:0715:060 min15:06123 min24 Jul
Suva20:58 → 21:0715:340 min15:35134 min24 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
kokila-vrata@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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