Ruling · Śiva Śayanotsava · 2018

Friday 27 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 294 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 26 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:35 sunsetpradoṣa ends 20:52
19:1119:3519:5920:2320:4721:1121:35

0 of 77 minutes covered

Evening of Friday 27 July

Taken. The only evening Pūrṇimā reaches.

19:34 sunsetpradoṣa ends 20:52
19:1019:3419:5820:2220:4621:1021:34

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 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul.

    2018-07-26T17:46:28Z → 2018-07-27T20:20:21Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:35–20:52 on the 26th, 19:34–20:52 on the 27th.

    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 77 minutes on the 26th and 78 of 78 on the 27th.

    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 17648 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2018: Friday 27 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2018 falls on Friday 27 July. Pūrṇimā runs from 01:46 on Fri 27 Jul to 04:20 on Sat 28 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2018/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 27 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 27 Jul
compat-drikpanchangComparison profileFri 27 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 26thCoveredSunset 27thCoveredRuled
Los Angeles10:46 → 13:2019:5880 min19:570 min26 Jul
Chicago12:46 → 15:2020:1575 min20:140 min26 Jul
Jersey City13:46 → 16:2020:1776 min20:170 min26 Jul
Port of Spain13:46 → 16:2018:3191 min18:310 min26 Jul
London18:46 → 21:2020:5867 min20:5624 min26 Jul
Durban19:46 → 22:2017:200 min17:20107 min27 Jul
Dubai21:46 → 00:2019:070 min19:0685 min27 Jul
Delhi23:16 → 01:5019:160 min19:1583 min27 Jul
Kolkata23:16 → 01:5018:200 min18:2086 min27 Jul
Singapore01:46 → 04:2019:160 min19:1695 min27 Jul
Sydney03:46 → 06:2017:110 min17:12109 min27 Jul
Suva05:46 → 08:2017:500 min17:50102 min27 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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