Ruling · Śiva Śayanotsava · 2024

Saturday 20 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 25 minutes.

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 Saturday 20 July

Taken. The only evening Pūrṇimā reaches.

19:39 sunsetpradoṣa ends 20:55
Pūrṇimā begins 20:30:00
19:1519:3920:0320:2720:5121:1521:39

25 of 76 minutes covered, the last 25

Evening of Sunday 21 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:39 sunsetpradoṣa ends 20:55
19:1519:3920:0320:2720:5121:1521:39

0 of 76 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 20:30 on Sat 20 Jul to 18:17 on Sun 21 Jul.

    2024-07-20T12:30:01Z → 2024-07-21T10:17:09Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:39–20:55 on the 20th, 19:39–20:55 on the 21st.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 25 of 76 minutes on the 20th and 0 of 76 on the 21st.

    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 1524 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2024: Saturday 20 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2024 falls on Saturday 20 July. Pūrṇimā runs from 20:30 on Sat 20 Jul to 18:17 on Sun 21 Jul and covers 25 of 76 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/2024/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 20 Jul
compat-drikpanchangComparison profileSat 20 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 20thCoveredSunset 21stCoveredRuled
Los Angeles05:30 → 03:1720:0279 min20:010 min20 Jul
Chicago07:30 → 05:1720:2074 min20:190 min20 Jul
Jersey City08:30 → 06:1720:2275 min20:210 min20 Jul
Port of Spain08:30 → 06:1718:3291 min18:320 min20 Jul
London13:30 → 11:1721:0565 min21:040 min20 Jul
Durban14:30 → 12:1717:17108 min17:170 min20 Jul
Dubai16:30 → 14:1719:0984 min19:090 min20 Jul
Delhi18:00 → 15:4719:1982 min19:180 min20 Jul
Kolkata18:00 → 15:4718:2286 min18:220 min20 Jul
Singapore20:30 → 18:1719:1621 min19:160 min20 Jul
Sydney22:30 → 20:1717:070 min17:08110 min21 Jul
Suva00:30 → 22:1717:480 min17:48102 min21 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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