Ruling · Śiva Śayanotsava · 2004

Thursday 1 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 Thursday 1 July

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

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

0 of 73 minutes covered

Evening of Friday 2 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

0 of 73 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 23:01 on Thu 1 Jul to 19:09 on Fri 2 Jul.

    2004-07-01T15:01:23Z → 2004-07-02T11:08:55Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:47–21:00 on the 1st, 19:47–21:00 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 0 of 73 minutes on the 1st and 0 of 73 on the 2nd.

    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 2280 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2004: Thursday 1 July.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Śiva Śayanotsava 2004 falls on Thursday 1 July. Pūrṇimā runs from 23:01 on Thu 1 Jul to 19:09 on Fri 2 Jul, and reaches pradoṣa on neither day.

ahargana.org/baoding/festivals/2004/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 1 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 1 Jul
compat-drikpanchangComparison profileThu 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 Angeles08:01 → 04:0920:0877 min20:080 min1 Jul
Chicago10:01 → 06:0920:2971 min20:290 min1 Jul
Jersey City11:01 → 07:0920:3172 min20:310 min1 Jul
Port of Spain11:01 → 07:0918:3290 min18:320 min1 Jul
London16:01 → 12:0921:2060 min21:200 min1 Jul
Durban17:01 → 13:0917:07110 min17:080 min1 Jul
Dubai19:01 → 15:0919:1283 min19:120 min1 Jul
Delhi20:31 → 16:3919:2312 min19:230 min1 Jul
Kolkata20:31 → 16:3918:250 min18:250 min1 Jul
Singapore23:01 → 19:0919:140 min19:140 min1 Jul
Sydney01:01 → 21:0916:570 min16:57113 min2 Jul
Suva03:01 → 23:0917:420 min17:42104 min2 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

About Ahargaṇa