Ruling · Śiva Śayanotsava · 2049

Wednesday 14 July

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 311 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Wednesday 14 July

Taken. The only evening Pūrṇimā reaches.

sunset 19:30  20:38 pradoṣa ends
18:4219:0619:3019:5420:1820:4221:0621:30

68 of 68 minutes covered

Evening of Thursday 15 July

Pūrṇimā is absent from pradoṣa. Not taken.

sunset 19:29  20:38 pradoṣa ends
18:4119:0519:2919:5320:1720:4121:0521:29

0 of 69 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 14:19 on Wed 14 Jul to 10:30 on Thu 15 Jul.

    2049-07-14T06:19:11Z → 2049-07-15T02:29:44Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:30–20:38 on the 14th, 19:29–20:38 on the 15th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 68 of 68 minutes on the 14th and 0 of 69 on the 15th.

    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 18660 s

  5. 05

    Ruling

    Śiva Śayanotsava, Daqing, 2049: Wednesday 14 July.

    confidence: determinate

Say it like this

In Daqing, Śiva Śayanotsava 2049 falls on Wednesday 14 July. Pūrṇimā runs from 14:19 on Wed 14 Jul to 10:30 on Thu 15 Jul and covers all of pradoṣa that evening.

ahargana.org/daqing/festivals/2049/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 14 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 14 Jul
compat-drikpanchangComparison profileWed 14 Jul
No institution has a recorded ruling for Daqing.

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 14thCoveredSunset 15thCoveredRuled
Los Angeles23:19 → 19:3020:050 min20:040 min13 Jul
Chicago01:19 → 21:3020:2466 min20:230 min14 Jul
Jersey City02:19 → 22:3020:2674 min20:260 min14 Jul
Port of Spain02:19 → 22:3018:3391 min18:330 min14 Jul
London07:19 → 03:3021:1263 min21:110 min14 Jul
Durban08:19 → 04:3017:14109 min17:140 min14 Jul
Dubai10:19 → 06:3019:1184 min19:110 min14 Jul
Delhi11:49 → 08:0019:2182 min19:210 min14 Jul
Kolkata11:49 → 08:0018:2485 min18:240 min14 Jul
Singapore14:19 → 10:3019:1695 min19:160 min14 Jul
Sydney16:19 → 12:3017:04111 min17:040 min14 Jul
Suva18:19 → 14:3017:4670 min17:460 min14 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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