Ruling · Śiva Śayanotsava · 2099

Thursday 2 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 82 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 Wednesday 1 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:48 sunsetpradoṣa ends 21:01
19:2419:4820:1220:3621:0021:2421:48

0 of 73 minutes covered

Evening of Thursday 2 July

Taken. The only evening Pūrṇimā reaches.

19:47 sunsetpradoṣa ends 21:01
19:2319:4720:1120:3520:5921:2321:47

73 of 73 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 22:38 on Wed 1 Jul to 22:23 on Thu 2 Jul.

    2099-07-01T14:38:28Z → 2099-07-02T14:23:07Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:48–21:01 on the 1st, 19:47–21:01 on the 2nd.

    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 1st and 73 of 73 on the 2nd.

    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 4932 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2099: Thursday 2 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2099 falls on Thursday 2 July. Pūrṇimā runs from 22:38 on Wed 1 Jul to 22:23 on Thu 2 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2099/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 2 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 2 Jul
compat-drikpanchangComparison profileThu 2 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 1stCoveredSunset 2ndCoveredRuled
Los Angeles07:38 → 07:2320:0977 min20:090 min1 Jul
Chicago09:38 → 09:2320:3071 min20:290 min1 Jul
Jersey City10:38 → 10:2320:3272 min20:310 min1 Jul
Port of Spain10:38 → 10:2318:3390 min18:330 min1 Jul
London15:38 → 15:2321:2160 min21:200 min1 Jul
Durban16:38 → 16:2317:08110 min17:080 min1 Jul
Dubai18:38 → 18:2319:1383 min19:130 min1 Jul
Delhi20:08 → 19:5319:2336 min19:2330 min1 Jul
Kolkata20:08 → 19:5318:260 min18:2684 min2 Jul
Singapore22:38 → 22:2319:150 min19:1595 min2 Jul
Sydney00:38 → 00:2316:570 min16:58113 min2 Jul
Suva02:38 → 02:2317:420 min17:43104 min2 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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