Ruling · Śiva Śayanotsava · 1900

Thursday 12 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 23 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 Wednesday 11 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:50 sunsetpradoṣa ends 21:04
19:2619:5020:1420:3821:0221:2621:50

0 of 74 minutes covered

Evening of Thursday 12 July

Taken. The only evening Pūrṇimā reaches.

19:49 sunsetpradoṣa ends 21:04
Pūrṇimā ends 21:27:36
19:2519:4920:1320:3721:0121:2521:49

75 of 75 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 23:25 on Wed 11 Jul to 21:27 on Thu 12 Jul.

    1900-07-11T15:19:52Z → 1900-07-12T13:21:54Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:50–21:04 on the 11th, 19:49–21:04 on the 12th.

    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 74 minutes on the 11th and 75 of 75 on the 12th.

    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 1393 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1900: Thursday 12 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1900 falls on Thursday 12 July. Pūrṇimā runs from 23:25 on Wed 11 Jul to 21:27 on Thu 12 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1900/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 12 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 12 Jul
compat-drikpanchangComparison profileThu 12 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 11thCoveredSunset 12thCoveredRuled
Los Angeles07:20 → 05:2219:0678 min19:060 min11 Jul
Chicago09:20 → 07:2219:2672 min19:250 min11 Jul
Jersey City10:20 → 08:2219:2873 min19:280 min11 Jul
Port of Spain11:20 → 09:2218:3290 min18:320 min11 Jul
London15:20 → 13:2220:1562 min20:140 min11 Jul
Durban16:50 → 14:5216:41101 min16:420 min11 Jul
Dubai19:01 → 17:0318:5375 min18:520 min11 Jul
Delhi20:41 → 18:4319:130 min19:120 min11 Jul
Kolkata20:41 → 18:4318:150 min18:1528 min12 Jul
Singapore22:15 → 20:1718:100 min18:1095 min12 Jul
Sydney01:20 → 23:2217:010 min17:02112 min12 Jul
Suva03:15 → 01:1717:390 min17:40103 min12 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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