Ruling · Śiva Śayanotsava · 2051

Sunday 23 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 222 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 22 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:38 sunsetpradoṣa ends 20:55
19:1419:3820:0220:2620:5021:1421:38

0 of 76 minutes covered

Evening of Sunday 23 July

Taken. The only evening Pūrṇimā reaches.

19:38 sunsetpradoṣa ends 20:54
19:1419:3820:0220:2620:5021:1421:38

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 01:58 on Sun 23 Jul to 00:37 on Mon 24 Jul.

    2051-07-22T17:57:30Z → 2051-07-23T16:36:33Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:38–20:55 on the 22nd, 19:38–20:54 on the 23rd.

    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 22nd and 77 of 77 on the 23rd.

    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 13341 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2051: Sunday 23 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2051 falls on Sunday 23 July. Pūrṇimā runs from 01:58 on Sun 23 Jul to 00:37 on Mon 24 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2051/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 23 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 23 Jul
compat-drikpanchangComparison profileSun 23 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 22ndCoveredSunset 23rdCoveredRuled
Los Angeles10:58 → 09:3720:0180 min20:000 min22 Jul
Chicago12:58 → 11:3720:1974 min20:180 min22 Jul
Jersey City13:58 → 12:3720:2175 min20:200 min22 Jul
Port of Spain13:58 → 12:3718:3291 min18:320 min22 Jul
London18:58 → 17:3721:0365 min21:020 min22 Jul
Durban19:58 → 18:3717:180 min17:1878 min23 Jul
Dubai21:58 → 20:3719:090 min19:0885 min23 Jul
Delhi23:28 → 22:0719:180 min19:1783 min23 Jul
Kolkata23:28 → 22:0718:220 min18:2286 min23 Jul
Singapore01:58 → 00:3719:160 min19:1695 min23 Jul
Sydney03:58 → 02:3717:090 min17:09110 min23 Jul
Suva05:58 → 04:3717:490 min17:49102 min23 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

About Ahargaṇa