Ruling · Śiva Śayanotsava · 2083

Wednesday 28 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 483 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 28 July

Taken. The only evening Pūrṇimā reaches.

19:33 sunsetpradoṣa ends 20:51
19:0919:3319:5720:2120:4521:0921:33

78 of 78 minutes covered

Evening of Thursday 29 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:32 sunsetpradoṣa ends 20:51
19:0819:3219:5620:2020:4421:0821:32

0 of 78 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 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul.

    2083-07-28T03:30:01Z → 2083-07-29T01:02:09Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:33–20:51 on the 28th, 19:32–20:51 on the 29th.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 78 of 78 minutes on the 28th and 0 of 78 on the 29th.

    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 29002 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2083: Wednesday 28 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2083 falls on Wednesday 28 July. Pūrṇimā runs from 11:30 on Wed 28 Jul to 09:02 on Thu 29 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2083/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 28 Jul
compat-drikpanchangComparison profileWed 28 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 28thCoveredSunset 29thCoveredRuled
Los Angeles20:30 → 18:0219:570 min19:560 min27 Jul
Chicago22:30 → 20:0220:130 min20:120 min27 Jul
Jersey City23:30 → 21:0220:1647 min20:150 min28 Jul
Port of Spain23:30 → 21:0218:3191 min18:310 min28 Jul
London04:30 → 02:0220:5568 min20:530 min28 Jul
Durban05:30 → 03:0217:22107 min17:220 min28 Jul
Dubai07:30 → 05:0219:0685 min19:060 min28 Jul
Delhi09:00 → 06:3219:1584 min19:140 min28 Jul
Kolkata09:00 → 06:3218:2086 min18:190 min28 Jul
Singapore11:30 → 09:0219:1795 min19:170 min28 Jul
Sydney13:30 → 11:0217:13109 min17:140 min28 Jul
Suva15:30 → 13:0217:51102 min17:510 min28 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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