Ruling · Kokilā Vrata · 2005

Thursday 21 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 39 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Wednesday 20 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:45 sāyāhna beginssunset 19:40
16:2116:4517:0917:3317:5718:2118:4519:0919:3319:57

0 of 174 minutes covered

Late afternoon of Thursday 21 July

Taken. The only late afternoon Pūrṇimā reaches.

16:45 sāyāhna beginssunset 19:39
Pūrṇimā ends 19:00:15
16:2116:4517:0917:3317:5718:2118:4519:0919:3319:57

135 of 174 minutes covered, the first 135

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 22:53 on Wed 20 Jul to 19:00 on Thu 21 Jul.

    2005-07-20T14:53:28Z → 2005-07-21T11:00:15Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:45–19:40 on the 20th, 16:45–19:39 on the 21st.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 0 of 174 minutes on the 20th and 135 of 174 on the 21st.

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

  4. 04

    Tie-break

    Only one late afternoon qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 2315 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2005: Thursday 21 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2005 falls on Thursday 21 July. Pūrṇimā runs from 22:53 on Wed 20 Jul to 19:00 on Thu 21 Jul and covers 135 of 174 minutes of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2005/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 21 Jul
compat-drikpanchangComparison profileThu 21 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 20thCoveredSāyāhna 21stCoveredRuled
Los Angeles07:53 → 04:0017:13169 min17:130 min20 Jul
Chicago09:53 → 06:0017:23177 min17:220 min20 Jul
Jersey City10:53 → 07:0017:26176 min17:260 min20 Jul
Port of Spain10:53 → 07:0016:00152 min16:000 min20 Jul
London15:53 → 12:0017:54192 min17:530 min20 Jul
Durban16:53 → 13:0015:1123 min15:110 min20 Jul
Dubai18:53 → 15:0016:2816 min16:270 min20 Jul
Delhi20:23 → 16:3016:340 min16:340 min20 Jul
Kolkata20:23 → 16:3015:430 min15:4248 min21 Jul
Singapore22:53 → 19:0016:500 min16:50130 min21 Jul
Sydney00:53 → 21:0015:050 min15:05122 min21 Jul
Suva02:53 → 23:0015:340 min15:34134 min21 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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