Ruling · Śiva Śayanotsava · 2025

Thursday 10 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 428 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Wednesday 9 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:45 sunsetpradoṣa ends 20:59
19:2119:4520:0920:3320:5721:2121:45

0 of 74 minutes covered

Evening of Thursday 10 July

Taken. The only evening Pūrṇimā reaches.

19:45 sunsetpradoṣa ends 20:59
19:2119:4520:0920:3320:5721:2121:45

74 of 74 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 04:07 on Thu 10 Jul to 04:37 on Fri 11 Jul.

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

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:45–20:59 on the 9th, 19:45–20:59 on the 10th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 0 of 74 minutes on the 9th and 74 of 74 on the 10th.

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

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 25678 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2025: Thursday 10 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2025 falls on Thursday 10 July. Pūrṇimā runs from 04:07 on Thu 10 Jul to 04:37 on Fri 11 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2025/shiva-shayanotsava · 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 Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/shiva-shayanotsava · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Pradoṣa
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.

PlacePūrṇimāSunset 9thCoveredSunset 10thCoveredRuled
Los Angeles13:07 → 13:3720:0778 min20:060 min9 Jul
Chicago15:07 → 15:3720:2772 min20:260 min9 Jul
Jersey City16:07 → 16:3720:2973 min20:280 min9 Jul
Port of Spain16:07 → 16:3718:3390 min18:330 min9 Jul
London21:07 → 21:3721:1661 min21:1522 min9 Jul
Durban22:07 → 22:3717:110 min17:11109 min10 Jul
Dubai00:07 → 00:3719:120 min19:1283 min10 Jul
Delhi01:37 → 02:0719:220 min19:2281 min10 Jul
Kolkata01:37 → 02:0718:250 min18:2585 min10 Jul
Singapore04:07 → 04:3719:150 min19:1695 min10 Jul
Sydney06:07 → 06:3717:010 min17:01112 min10 Jul
Suva08:07 → 08:3717:440 min17:45103 min10 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shiva-shayanotsava@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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