Ruling · Śiva Śayanotsava · 1940

Thursday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 102 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 18 July

Taken. The only evening Pūrṇimā reaches.

20:41 sunsetpradoṣa ends 21:57
20:1720:4121:0521:2921:5322:1722:41

76 of 76 minutes covered

Evening of Friday 19 July

Pūrṇimā is absent from pradoṣa. Not taken.

20:40 sunsetpradoṣa ends 21:56
20:1620:4021:0421:2821:5222:1622:40

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 18:59 on Thu 18 Jul to 18:55 on Fri 19 Jul.

    1940-07-18T09:59:17Z → 1940-07-19T09:55:17Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 20:41–21:57 on the 18th, 20:40–21:56 on the 19th.

    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 18th and 0 of 76 on the 19th.

    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 6098 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1940: Thursday 18 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1940 falls on Thursday 18 July. Pūrṇimā runs from 18:59 on Thu 18 Jul to 18:55 on Fri 19 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1940/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 18 Jul
compat-drikpanchangComparison profileThu 18 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 18thCoveredSunset 19thCoveredRuled
Los Angeles01:59 → 01:5519:0379 min19:030 min18 Jul
Chicago04:59 → 04:5520:2273 min20:210 min18 Jul
Jersey City05:59 → 05:5520:2474 min20:230 min18 Jul
Port of Spain05:59 → 05:5518:3291 min18:320 min18 Jul
London10:59 → 10:5521:0864 min21:070 min18 Jul
Durban11:59 → 11:5517:15108 min17:160 min18 Jul
Dubai13:59 → 13:5519:1084 min19:100 min18 Jul
Delhi15:29 → 15:2519:1982 min19:190 min18 Jul
Kolkata15:29 → 15:2518:2385 min18:230 min18 Jul
Singapore17:19 → 17:1518:3695 min18:360 min18 Jul
Sydney19:59 → 19:5517:060 min17:06111 min19 Jul
Suva21:59 → 21:5517:470 min17:47103 min19 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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