Ruling · Śiva Śayanotsava · 1996

Monday 29 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 Monday 29 July

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

19:32 sunsetpradoṣa ends 20:50
19:0819:3219:5620:2020:4421:0821:32

0 of 78 minutes covered

Evening of Tuesday 30 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:31 sunsetpradoṣa ends 20:49
19:0719:3119:5520:1920:4321:0721:31

0 of 78 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 22:32 on Mon 29 Jul to 18:35 on Tue 30 Jul.

    1996-07-29T14:32:16Z → 1996-07-30T10:35:10Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:32–20:50 on the 29th, 19:31–20:49 on the 30th.

    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 78 minutes on the 29th and 0 of 78 on the 30th.

    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 3354 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1996: Monday 29 July.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Śiva Śayanotsava 1996 falls on Monday 29 July. Pūrṇimā runs from 22:32 on Mon 29 Jul to 18:35 on Tue 30 Jul, and reaches pradoṣa on neither day.

ahargana.org/baoding/festivals/1996/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 29 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 29 Jul
compat-drikpanchangComparison profileMon 29 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 29thCoveredSunset 30thCoveredRuled
Los Angeles07:32 → 03:3519:5681 min19:550 min29 Jul
Chicago09:32 → 05:3520:1176 min20:100 min29 Jul
Jersey City10:32 → 06:3520:1477 min20:130 min29 Jul
Port of Spain10:32 → 06:3518:3091 min18:300 min29 Jul
London15:32 → 11:3520:5368 min20:510 min29 Jul
Durban16:32 → 12:3517:22107 min17:220 min29 Jul
Dubai18:32 → 14:3519:0585 min19:050 min29 Jul
Delhi20:02 → 16:0519:1435 min19:130 min29 Jul
Kolkata20:02 → 16:0518:190 min18:180 min29 Jul
Singapore22:32 → 18:3519:160 min19:160 min29 Jul
Sydney00:32 → 20:3517:130 min17:14109 min30 Jul
Suva02:32 → 22:3517:510 min17:51102 min30 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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