Ruling · Śiva Śayanotsava · 1964

Friday 24 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 74 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 23 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:37 sunsetpradoṣa ends 20:54
19:1319:3720:0120:2520:4921:1321:37

0 of 77 minutes covered

Evening of Friday 24 July

Taken. The only evening Pūrṇimā reaches.

19:37 sunsetpradoṣa ends 20:53
19:1319:3720:0120:2520:4921:1321:37

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 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul.

    1964-07-23T14:08:01Z → 1964-07-24T15:57:46Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:37–20:54 on the 23rd, 19:37–20:53 on the 24th.

    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 23rd and 77 of 77 on the 24th.

    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 4443 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1964: Friday 24 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1964 falls on Friday 24 July. Pūrṇimā runs from 22:08 on Thu 23 Jul to 23:58 on Fri 24 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1964/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 24 Jul
Ahargaṇa, classicalDisc centre, no refractionFri 24 Jul
compat-drikpanchangComparison profileFri 24 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 23rdCoveredSunset 24thCoveredRuled
Los Angeles07:08 → 08:5820:0080 min19:590 min23 Jul
Chicago09:08 → 10:5820:1775 min20:170 min23 Jul
Jersey City10:08 → 11:5820:2075 min20:190 min23 Jul
Port of Spain10:08 → 11:5818:3291 min18:310 min23 Jul
London15:08 → 16:5821:0265 min21:000 min23 Jul
Durban16:08 → 17:5817:18108 min17:1939 min23 Jul
Dubai18:08 → 19:5819:0885 min19:0850 min23 Jul
Delhi19:38 → 21:2819:1762 min19:1783 min24 Jul
Kolkata19:38 → 21:2818:219 min18:2186 min24 Jul
Singapore21:38 → 23:2818:460 min18:4695 min24 Jul
Sydney00:08 → 01:5817:090 min17:10110 min24 Jul
Suva02:08 → 03:5817:490 min17:49102 min24 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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