Ruling · Śiva Śayanotsava · 2009

Monday 6 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 144 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 Monday 6 July

Taken. The only evening Pūrṇimā reaches.

19:46 sunsetpradoṣa ends 21:00
19:2219:4620:1020:3420:5821:2221:46

74 of 74 minutes covered

Evening of Tuesday 7 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:46 sunsetpradoṣa ends 21:00
19:2219:4620:1020:3420:5821:2221:46

0 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 14:53 on Mon 6 Jul to 17:21 on Tue 7 Jul.

    2009-07-06T06:52:39Z → 2009-07-07T09:21:25Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:46–21:00 on the 6th, 19:46–21:00 on the 7th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 74 of 74 minutes on the 6th and 0 of 74 on the 7th.

    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 8669 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2009: Monday 6 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2009 falls on Monday 6 July. Pūrṇimā runs from 14:53 on Mon 6 Jul to 17:21 on Tue 7 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2009/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 6 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 6 Jul
compat-drikpanchangComparison profileMon 6 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 6thCoveredSunset 7thCoveredRuled
Los Angeles23:53 → 02:2120:0777 min20:070 min6 Jul
Chicago01:53 → 04:2120:2871 min20:280 min6 Jul
Jersey City02:53 → 05:2120:3072 min20:300 min6 Jul
Port of Spain02:53 → 05:2118:3290 min18:320 min6 Jul
London07:53 → 10:2121:1861 min21:170 min6 Jul
Durban08:53 → 11:2117:09110 min17:100 min6 Jul
Dubai10:53 → 13:2119:1283 min19:120 min6 Jul
Delhi12:23 → 14:5119:2381 min19:220 min6 Jul
Kolkata12:23 → 14:5118:2584 min18:250 min6 Jul
Singapore14:53 → 17:2119:1595 min19:150 min6 Jul
Sydney16:53 → 19:2116:59112 min17:00112 min6 Jul
Suva18:53 → 21:2117:4334 min17:43103 min7 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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