Ruling · Śiva Śayanotsava · 1984

Thursday 12 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 564 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 Thursday 12 July

Taken. The only evening Pūrṇimā reaches.

19:44 sunsetpradoṣa ends 20:59
19:2019:4420:0820:3220:5621:2021:44

75 of 75 minutes covered

Evening of Friday 13 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:44 sunsetpradoṣa ends 20:58
19:2019:4420:0820:3220:5621:2021:44

0 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 10:01 on Thu 12 Jul to 10:20 on Fri 13 Jul.

    1984-07-12T02:00:57Z → 1984-07-13T02:19:44Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:44–20:59 on the 12th, 19:44–20:58 on the 13th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 75 of 75 minutes on the 12th and 0 of 75 on the 13th.

    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 33828 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1984: Thursday 12 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1984 falls on Thursday 12 July. Pūrṇimā runs from 10:01 on Thu 12 Jul to 10:20 on Fri 13 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1984/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 12thCoveredSunset 13thCoveredRuled
Los Angeles19:01 → 19:2020:060 min20:050 min11 Jul
Chicago21:01 → 21:2020:2555 min20:250 min12 Jul
Jersey City22:01 → 22:2020:2773 min20:270 min12 Jul
Port of Spain22:01 → 22:2018:3290 min18:320 min12 Jul
London03:01 → 03:2021:1462 min21:130 min12 Jul
Durban04:01 → 04:2017:12109 min17:130 min12 Jul
Dubai06:01 → 06:2019:1283 min19:110 min12 Jul
Delhi07:31 → 07:5019:2181 min19:210 min12 Jul
Kolkata07:31 → 07:5018:2485 min18:240 min12 Jul
Singapore10:01 → 10:2019:1695 min19:160 min12 Jul
Sydney12:01 → 12:2017:02112 min17:030 min12 Jul
Suva14:01 → 14:2017:45103 min17:450 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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