Ruling · Śiva Śayanotsava · 1990

Saturday 7 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 622 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 Saturday 7 July

Taken. The only evening Pūrṇimā reaches.

20:46 sunsetpradoṣa ends 22:00
20:2220:4621:1021:3421:5822:2222:46

74 of 74 minutes covered

Evening of Sunday 8 July

Pūrṇimā is absent from pradoṣa. Not taken.

20:46 sunsetpradoṣa ends 22:00
20:2220:4621:1021:3421:5822:2222:46

0 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 08:52 on Sat 7 Jul to 10:23 on Sun 8 Jul.

    1990-07-06T23:52:14Z → 1990-07-08T01:23:29Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 20:46–22:00 on the 7th, 20:46–22:00 on the 8th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 74 of 74 minutes on the 7th and 0 of 74 on the 8th.

    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 37333 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1990: Saturday 7 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1990 falls on Saturday 7 July. Pūrṇimā runs from 08:52 on Sat 7 Jul to 10:23 on Sun 8 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1990/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 7 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 7 Jul
compat-drikpanchangComparison profileSat 7 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 6thCoveredSunset 8thCoveredRuled
Los Angeles16:52 → 18:2320:0777 min20:070 min6 Jul
Chicago18:52 → 20:2320:2871 min20:270 min6 Jul
Jersey City19:52 → 21:2320:3072 min20:290 min6 Jul
Port of Spain19:52 → 21:2318:3210 min18:320 min7 Jul
London00:52 → 02:2321:180 min21:170 min7 Jul
Durban01:52 → 03:2317:090 min17:100 min7 Jul
Dubai03:52 → 05:2319:120 min19:120 min7 Jul
Delhi05:22 → 06:5319:230 min19:220 min7 Jul
Kolkata05:22 → 06:5318:250 min18:250 min7 Jul
Singapore07:52 → 09:2319:150 min19:150 min7 Jul
Sydney09:52 → 11:2316:590 min17:000 min7 Jul
Suva11:52 → 13:2317:430 min17:440 min7 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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