Ruling · Kokilā Vrata · 2025

Thursday 10 July

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 381 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two late afternoons

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

Late afternoon of Wednesday 9 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:35 sāyāhna beginssunset 19:16
16:1116:3516:5917:2317:4718:1118:3518:5919:2319:47

0 of 162 minutes covered

Late afternoon of Thursday 10 July

Taken. The only late afternoon Pūrṇimā reaches.

16:35 sāyāhna beginssunset 19:16
16:1116:3516:5917:2317:4718:1118:3518:5919:2319:47

162 of 162 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 01:37 on Thu 10 Jul to 02:07 on Fri 11 Jul.

    2025-07-09T20:07:26Z → 2025-07-10T20:36:48Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:35–19:16 on the 9th, 16:35–19:16 on the 10th.

    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 162 minutes on the 9th and 162 of 162 on the 10th.

    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 22864 s

  5. 05

    Ruling

    Kokilā Vrata, Ujjain, 2025: Thursday 10 July.

    confidence: determinate

Say it like this

In Ujjain, Kokilā Vrata 2025 falls on Thursday 10 July. Pūrṇimā runs from 01:37 on Thu 10 Jul to 02:07 on Fri 11 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/ujjain/festivals/2025/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 10 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 10 Jul
compat-drikpanchangComparison profileThu 10 Jul
No institution has a recorded ruling for Ujjain.

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 9thCoveredSāyāhna 10thCoveredRuled
Los Angeles13:07 → 13:3717:15171 min17:150 min9 Jul
Chicago15:07 → 15:3717:26180 min17:260 min9 Jul
Jersey City16:07 → 16:3717:30179 min17:300 min9 Jul
Port of Spain16:07 → 16:3716:00145 min16:0037 min9 Jul
London21:07 → 21:3718:009 min17:59196 min10 Jul
Durban22:07 → 22:3715:070 min15:07124 min10 Jul
Dubai00:07 → 00:3716:290 min16:29163 min10 Jul
Delhi01:37 → 02:0716:360 min16:36166 min10 Jul
Kolkata01:37 → 02:0715:440 min15:44161 min10 Jul
Singapore04:07 → 04:3716:490 min16:49146 min10 Jul
Sydney06:07 → 06:3715:010 min15:01120 min10 Jul
Suva08:07 → 08:3715:310 min15:31133 min10 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