Ruling · Śiva Śayanotsava · 1943

Saturday 17 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 36 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 Friday 16 July

Pūrṇimā is absent from pradoṣa. Not taken.

20:42 sunsetpradoṣa ends 21:58
20:1820:4221:0621:3021:5422:1822:42

0 of 75 minutes covered

Evening of Saturday 17 July

Taken. The only evening Pūrṇimā reaches.

20:42 sunsetpradoṣa ends 21:57
Pūrṇimā ends 21:21:30
20:1820:4221:0621:3021:5422:1822:42

40 of 75 minutes covered, the first 40

Pūrṇimā presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 01:05 on Sat 17 Jul to 21:22 on Sat 17 Jul.

    1943-07-16T16:04:39Z → 1943-07-17T12:21:30Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 20:42–21:58 on the 16th, 20:42–21:57 on the 17th.

    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 75 minutes on the 16th and 40 of 75 on the 17th.

    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 2143 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1943: Saturday 17 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1943 falls on Saturday 17 July. Pūrṇimā runs from 01:05 on Sat 17 Jul to 21:22 on Sat 17 Jul and covers 40 of 75 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1943/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 17 Jul
compat-drikpanchangComparison profileSat 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 16thCoveredSunset 17thCoveredRuled
Los Angeles09:05 → 05:2220:0479 min20:040 min16 Jul
Chicago11:05 → 07:2220:2373 min20:230 min16 Jul
Jersey City12:05 → 08:2220:2674 min20:250 min16 Jul
Port of Spain13:05 → 09:2219:3291 min19:320 min16 Jul
London18:05 → 14:2222:1163 min22:100 min16 Jul
Durban18:05 → 14:2217:1458 min17:140 min16 Jul
Dubai20:05 → 16:2219:1130 min19:100 min16 Jul
Delhi22:35 → 18:5220:200 min20:200 min16 Jul
Kolkata22:35 → 18:5219:240 min19:230 min16 Jul
Singapore01:05 → 21:2220:160 min20:1666 min17 Jul
Sydney02:05 → 22:2217:040 min17:04111 min17 Jul
Suva04:05 → 00:2217:460 min17:46103 min17 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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