Ruling · Kokilā Vrata · 1929

Sunday 21 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 327 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 Saturday 20 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:46 sāyāhna beginssunset 19:40
16:2216:4617:1017:3417:5818:2218:4619:1019:3419:58

0 of 174 minutes covered

Late afternoon of Sunday 21 July

Taken. The only late afternoon Pūrṇimā reaches.

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

174 of 174 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 01:07 on Sun 21 Jul to 03:21 on Mon 22 Jul.

    1929-07-20T17:06:33Z → 1929-07-21T19:20:38Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:46–19:40 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 174 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 19602 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1929: Sunday 21 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1929 falls on Sunday 21 July. Pūrṇimā runs from 01:07 on Sun 21 Jul to 03:21 on Mon 22 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1929/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 21 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 21 Jul
compat-drikpanchangComparison profileSun 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 Angeles09:07 → 11:2116:13169 min16:130 min20 Jul
Chicago12:07 → 14:2117:23178 min17:220 min20 Jul
Jersey City13:07 → 15:2117:27176 min17:260 min20 Jul
Port of Spain13:07 → 15:2116:00152 min16:000 min20 Jul
London18:07 → 20:2117:54179 min17:53147 min20 Jul
Durban19:07 → 21:2115:100 min15:11126 min21 Jul
Dubai21:07 → 23:2116:280 min16:27162 min21 Jul
Delhi22:37 → 00:5116:340 min16:34164 min21 Jul
Kolkata22:37 → 00:5115:430 min15:42160 min21 Jul
Singapore00:07 → 02:2115:500 min15:50146 min21 Jul
Sydney03:07 → 05:2115:040 min15:05122 min21 Jul
Suva05:07 → 07:2115:330 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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