Ruling · Śiva Śayanotsava · 2008

Thursday 17 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 222 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 Thursday 17 July

Taken. The only evening Pūrṇimā reaches.

19:41 sunsetpradoṣa ends 20:57
19:1719:4120:0520:2920:5321:1721:41

76 of 76 minutes covered

Evening of Friday 18 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:41 sunsetpradoṣa ends 20:56
19:1719:4120:0520:2920:5321:1721:41

0 of 76 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 14:20 on Thu 17 Jul to 15:59 on Fri 18 Jul.

    2008-07-17T06:20:10Z → 2008-07-18T07:59:05Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:41–20:57 on the 17th, 19:41–20:56 on the 18th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 76 of 76 minutes on the 17th and 0 of 76 on the 18th.

    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 13296 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2008: Thursday 17 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2008 falls on Thursday 17 July. Pūrṇimā runs from 14:20 on Thu 17 Jul to 15:59 on Fri 18 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2008/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 17 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 17 Jul
compat-drikpanchangComparison profileThu 17 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 17thCoveredSunset 18thCoveredRuled
Los Angeles23:20 → 00:5920:0379 min20:030 min17 Jul
Chicago01:20 → 02:5920:2273 min20:210 min17 Jul
Jersey City02:20 → 03:5920:2474 min20:240 min17 Jul
Port of Spain02:20 → 03:5918:3291 min18:320 min17 Jul
London07:20 → 08:5921:0964 min21:070 min17 Jul
Durban08:20 → 09:5917:15109 min17:160 min17 Jul
Dubai10:20 → 11:5919:1084 min19:100 min17 Jul
Delhi11:50 → 13:2919:2082 min19:190 min17 Jul
Kolkata11:50 → 13:2918:2385 min18:230 min17 Jul
Singapore14:20 → 15:5919:1695 min19:160 min17 Jul
Sydney16:20 → 17:5917:05111 min17:0653 min17 Jul
Suva18:20 → 19:5917:4770 min17:47103 min18 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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