Ruling · Śiva Śayanotsava · 1967

Friday 21 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 104 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 20 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:40 sunsetpradoṣa ends 20:56
19:1619:4020:0420:2820:5221:1621:40

0 of 76 minutes covered

Evening of Friday 21 July

Taken. The only evening Pūrṇimā reaches.

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

76 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 23:39 on Thu 20 Jul to 22:39 on Fri 21 Jul.

    1967-07-20T15:39:17Z → 1967-07-21T14:39:09Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:40–20:56 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 0 of 76 minutes on the 20th and 76 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 6224 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1967: Friday 21 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1967 falls on Friday 21 July. Pūrṇimā runs from 23:39 on Thu 20 Jul to 22:39 on Fri 21 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1967/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 21 Jul
compat-drikpanchangComparison profileFri 21 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 Angeles08:39 → 07:3920:0279 min20:020 min20 Jul
Chicago10:39 → 09:3920:2174 min20:200 min20 Jul
Jersey City11:39 → 10:3920:2375 min20:220 min20 Jul
Port of Spain11:39 → 10:3918:3291 min18:320 min20 Jul
London16:39 → 15:3921:0664 min21:050 min20 Jul
Durban17:39 → 16:3917:1685 min17:160 min20 Jul
Dubai19:39 → 18:3919:1054 min19:090 min20 Jul
Delhi21:09 → 20:0919:190 min19:1951 min21 Jul
Kolkata21:09 → 20:0918:230 min18:2285 min21 Jul
Singapore23:09 → 22:0918:460 min18:4695 min21 Jul
Sydney01:39 → 00:3917:070 min17:07110 min21 Jul
Suva03:39 → 02:3917:470 min17:48103 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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