Ruling · Śiva Śayanotsava · 2080

Monday 1 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 457 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 Monday 1 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

Evening of Tuesday 2 July

Pūrṇimā is absent from pradoṣa. Not taken.

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

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 10:05 on Mon 1 Jul to 12:10 on Tue 2 Jul.

    2080-07-01T02:05:08Z → 2080-07-02T04:10:08Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:47–21:01 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 73 of 73 minutes on the 1st and 0 of 74 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 27422 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2080: Monday 1 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2080 falls on Monday 1 July. Pūrṇimā runs from 10:05 on Mon 1 Jul to 12:10 on Tue 2 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2080/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 1 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 1 Jul
compat-drikpanchangComparison profileMon 1 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 Angeles19:05 → 21:1020:0862 min20:080 min30 Jun
Chicago21:05 → 23:1020:2971 min20:290 min1 Jul
Jersey City22:05 → 00:1020:3172 min20:310 min1 Jul
Port of Spain22:05 → 00:1018:3290 min18:320 min1 Jul
London03:05 → 05:1021:2060 min21:200 min1 Jul
Durban04:05 → 06:1017:08110 min17:080 min1 Jul
Dubai06:05 → 08:1019:1383 min19:130 min1 Jul
Delhi07:35 → 09:4019:2381 min19:230 min1 Jul
Kolkata07:35 → 09:4018:2584 min18:250 min1 Jul
Singapore10:05 → 12:1019:1595 min19:150 min1 Jul
Sydney12:05 → 14:1016:58113 min16:580 min1 Jul
Suva14:05 → 16:1017:42104 min17:430 min1 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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