Ruling · Śiva Śayanotsava · 2013

Monday 22 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 321 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 Sunday 21 July

Pūrṇimā is absent from pradoṣa. Not taken.

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

0 of 76 minutes covered

Evening of Monday 22 July

Taken. The only evening Pūrṇimā reaches.

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

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 06:02 on Mon 22 Jul to 02:16 on Tue 23 Jul.

    2013-07-21T22:01:48Z → 2013-07-22T18:15:32Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:39–20:55 on the 21st, 19:38–20:55 on the 22nd.

    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 21st and 76 of 76 on the 22nd.

    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 19262 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2013: Monday 22 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2013 falls on Monday 22 July. Pūrṇimā runs from 06:02 on Mon 22 Jul to 02:16 on Tue 23 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2013/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 22 Jul
compat-drikpanchangComparison profileMon 22 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 21stCoveredSunset 22ndCoveredRuled
Los Angeles15:02 → 11:1620:0180 min20:010 min21 Jul
Chicago17:02 → 13:1620:1974 min20:180 min21 Jul
Jersey City18:02 → 14:1620:2275 min20:210 min21 Jul
Port of Spain18:02 → 14:1618:3291 min18:320 min21 Jul
London23:02 → 19:1621:040 min21:030 min21 Jul
Durban00:02 → 20:1617:170 min17:18108 min22 Jul
Dubai02:02 → 22:1619:090 min19:0984 min22 Jul
Delhi03:32 → 23:4619:180 min19:1883 min22 Jul
Kolkata03:32 → 23:4618:220 min18:2286 min22 Jul
Singapore06:02 → 02:1619:160 min19:1695 min22 Jul
Sydney08:02 → 04:1617:080 min17:08110 min22 Jul
Suva10:02 → 06:1617:480 min17:49102 min22 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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