Ruling · Kokilā Vrata · 2091

Monday 30 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 31 minutes.

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 Sunday 29 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:41 sāyāhna beginssunset 19:32
16:1716:4117:0517:2917:5318:1718:4119:0519:2919:53

0 of 171 minutes covered

Late afternoon of Monday 30 July

Taken. The only late afternoon Pūrṇimā reaches.

16:41 sāyāhna beginssunset 19:31
16:1716:4117:0517:2917:5318:1718:4119:0519:2919:53

171 of 171 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 20:46 on Sun 29 Jul to 20:03 on Mon 30 Jul.

    2091-07-29T12:46:04Z → 2091-07-30T12:02:52Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:41–19:32 on the 29th, 16:41–19:31 on the 30th.

    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 171 minutes on the 29th and 171 of 171 on the 30th.

    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 1882 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 2091: Monday 30 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 2091 falls on Monday 30 July. Pūrṇimā runs from 20:46 on Sun 29 Jul to 20:03 on Mon 30 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/2091/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 30 Jul
compat-drikpanchangComparison profileMon 30 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 29thCoveredSāyāhna 30thCoveredRuled
Los Angeles05:46 → 05:0317:10167 min17:090 min29 Jul
Chicago07:46 → 07:0317:18174 min17:170 min29 Jul
Jersey City08:46 → 08:0317:22173 min17:210 min29 Jul
Port of Spain08:46 → 08:0316:00151 min15:590 min29 Jul
London13:46 → 13:0317:47186 min17:460 min29 Jul
Durban14:46 → 14:0315:15128 min15:150 min29 Jul
Dubai16:46 → 16:0316:26139 min16:250 min29 Jul
Delhi18:16 → 17:3316:3258 min16:3162 min30 Jul
Kolkata18:16 → 17:3315:413 min15:41112 min30 Jul
Singapore20:46 → 20:0316:510 min16:50146 min30 Jul
Sydney22:46 → 22:0315:090 min15:10125 min30 Jul
Suva00:46 → 00:0315:360 min15:36135 min30 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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