Ruling · Śiva Śayanotsava · 1923

Friday 27 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 580 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 Thursday 26 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:36 sunsetpradoṣa ends 20:53
19:1219:3620:0020:2420:4821:1221:36

0 of 77 minutes covered

Evening of Friday 27 July

Taken. The only evening Pūrṇimā reaches.

19:35 sunsetpradoṣa ends 20:52
19:1119:3519:5920:2320:4721:1121:35

77 of 77 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 07:43 on Fri 27 Jul to 06:32 on Sat 28 Jul.

    1923-07-26T23:43:15Z → 1923-07-27T22:32:24Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:36–20:53 on the 26th, 19:35–20:52 on the 27th.

    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 77 minutes on the 26th and 77 of 77 on the 27th.

    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 34813 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1923: Friday 27 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1923 falls on Friday 27 July. Pūrṇimā runs from 07:43 on Fri 27 Jul to 06:32 on Sat 28 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1923/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 27 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 27 Jul
compat-drikpanchangComparison profileFri 27 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 26thCoveredSunset 27thCoveredRuled
Los Angeles15:43 → 14:3218:5980 min18:580 min26 Jul
Chicago18:43 → 17:3220:1675 min20:150 min26 Jul
Jersey City19:43 → 18:3220:1876 min20:170 min26 Jul
Port of Spain19:43 → 18:3218:3119 min18:311 min26 Jul
London00:43 → 23:3220:590 min20:5767 min27 Jul
Durban01:43 → 00:3217:190 min17:20107 min27 Jul
Dubai03:43 → 02:3219:070 min19:0785 min27 Jul
Delhi05:13 → 04:0219:160 min19:1683 min27 Jul
Kolkata05:13 → 04:0218:210 min18:2086 min27 Jul
Singapore06:43 → 05:3218:160 min18:1695 min27 Jul
Sydney09:43 → 08:3217:100 min17:11109 min27 Jul
Suva11:43 → 10:3217:490 min17:50102 min27 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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