Ruling · Śiva Śayanotsava · 2066

Tuesday 6 July

Boundaryin Baoding, under the Rashtriya Panchang method. Pūrṇimā reaches pradoṣa on neither day and the rule does not say what then. Say “contested”.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Tuesday 6 July

Taken. Pūrṇimā reaches neither evening; this is the day it falls on.

19:46 sunsetpradoṣa ends 21:00
Pūrṇimā begins 21:19:02
19:2219:4620:1020:3420:5821:2221:46

0 of 74 minutes covered

Evening of Wednesday 7 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:46 sunsetpradoṣa ends 21:00
19:2219:4620:1020:3420:5821:2221:46

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 21:19 on Tue 6 Jul to 17:35 on Wed 7 Jul.

    2066-07-06T13:19:03Z → 2066-07-07T09:35:28Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:46–21:00 on the 6th, 19:46–21:00 on the 7th.

    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 74 minutes on the 6th and 0 of 74 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither evening qualifies. The day the tithi falls on is taken.

    priority: unstated → tithi-day · margin 1130 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2066: Tuesday 6 July.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Śiva Śayanotsava 2066 falls on Tuesday 6 July. Pūrṇimā runs from 21:19 on Tue 6 Jul to 17:35 on Wed 7 Jul, and reaches pradoṣa on neither day.

ahargana.org/baoding/festivals/2066/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 6 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 6 Jul
compat-drikpanchangComparison profileTue 6 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 7thCoveredRuled
Los Angeles06:19 → 02:3520:0878 min20:070 min6 Jul
Chicago08:19 → 04:3520:2871 min20:280 min6 Jul
Jersey City09:19 → 05:3520:3072 min20:300 min6 Jul
Port of Spain09:19 → 05:3518:3390 min18:330 min6 Jul
London14:19 → 10:3521:1861 min21:180 min6 Jul
Durban15:19 → 11:3517:10110 min17:100 min6 Jul
Dubai17:19 → 13:3519:1383 min19:130 min6 Jul
Delhi18:49 → 15:0519:2381 min19:230 min6 Jul
Kolkata18:49 → 15:0518:2561 min18:250 min6 Jul
Singapore21:19 → 17:3519:150 min19:150 min6 Jul
Sydney23:19 → 19:3516:590 min17:00112 min7 Jul
Suva01:19 → 21:3517:440 min17:44103 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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