Ruling · Śiva Śayanotsava · 1917

Wednesday 4 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 520 minutes.

Decide it for

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 Tuesday 3 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

0 of 73 minutes covered

Evening of Wednesday 4 July

Taken. The only evening Pūrṇimā reaches.

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

74 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 08:31 on Wed 4 Jul to 05:40 on Thu 5 Jul.

    1917-07-04T00:30:33Z → 1917-07-04T21:40:12Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:47–21:00 on the 3rd, 19:47–21:00 on the 4th.

    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 73 minutes on the 3rd and 74 of 74 on the 4th.

    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 31205 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1917: Wednesday 4 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1917 falls on Wednesday 4 July. Pūrṇimā runs from 08:31 on Wed 4 Jul to 05:40 on Thu 5 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1917/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 4 Jul
compat-drikpanchangComparison profileWed 4 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 4thCoveredSunset 5thCoveredRuled
Los Angeles16:31 → 13:4019:080 min19:080 min3 Jul
Chicago18:31 → 15:4019:290 min19:280 min3 Jul
Jersey City19:31 → 16:4019:300 min19:300 min3 Jul
Port of Spain20:31 → 17:4018:320 min18:320 min3 Jul
London01:31 → 22:4021:1960 min21:190 min4 Jul
Durban02:31 → 23:4017:08110 min17:080 min4 Jul
Dubai04:12 → 01:2118:5383 min18:530 min4 Jul
Delhi06:01 → 03:1019:2381 min19:220 min4 Jul
Kolkata06:01 → 03:1018:2584 min18:250 min4 Jul
Singapore07:31 → 04:4018:1495 min18:140 min4 Jul
Sydney10:31 → 07:4016:57112 min16:580 min4 Jul
Suva12:31 → 09:4017:42104 min17:420 min4 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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