Ruling · Śiva Śayanotsava · 2045

Friday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 416 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 27 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:34 sunsetpradoṣa ends 20:51
19:1019:3419:5820:2220:4621:1021:34

0 of 78 minutes covered

Evening of Friday 28 July

Taken. The only evening Pūrṇimā reaches.

19:33 sunsetpradoṣa ends 20:51
19:0919:3319:5720:2120:4521:0921:33

78 of 78 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 03:47 on Fri 28 Jul to 06:11 on Sat 29 Jul.

    2045-07-27T19:47:21Z → 2045-07-28T22:10:41Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:34–20:51 on the 27th, 19:33–20:51 on the 28th.

    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 78 minutes on the 27th and 78 of 78 on the 28th.

    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 24953 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2045: Friday 28 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2045 falls on Friday 28 July. Pūrṇimā runs from 03:47 on Fri 28 Jul to 06:11 on Sat 29 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2045/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 28 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 28 Jul
compat-drikpanchangComparison profileFri 28 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 27thCoveredSunset 28thCoveredRuled
Los Angeles12:47 → 15:1119:5781 min19:560 min27 Jul
Chicago14:47 → 17:1120:1376 min20:120 min27 Jul
Jersey City15:47 → 18:1120:1677 min20:150 min27 Jul
Port of Spain15:47 → 18:1118:3191 min18:310 min27 Jul
London20:47 → 23:1120:5567 min20:5468 min28 Jul
Durban21:47 → 00:1117:210 min17:21107 min28 Jul
Dubai23:47 → 02:1119:060 min19:0685 min28 Jul
Delhi01:17 → 03:4119:150 min19:1484 min28 Jul
Kolkata01:17 → 03:4118:200 min18:1986 min28 Jul
Singapore03:47 → 06:1119:160 min19:1695 min28 Jul
Sydney05:47 → 08:1117:120 min17:13109 min28 Jul
Suva07:47 → 10:1117:500 min17:51102 min28 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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