Ruling · Śiva Śayanotsava · 1902

Sunday 20 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 125 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 19 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:41 sunsetpradoṣa ends 20:56
19:1719:4120:0520:2920:5321:1721:41

0 of 76 minutes covered

Evening of Sunday 20 July

Taken. The only evening Pūrṇimā reaches.

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

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 23:02 on Sat 19 Jul to 00:45 on Mon 21 Jul.

    1902-07-19T15:01:32Z → 1902-07-20T16:45:02Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:41–20:56 on the 19th, 19:40–20:56 on the 20th.

    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 19th and 76 of 76 on the 20th.

    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 7510 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1902: Sunday 20 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1902 falls on Sunday 20 July. Pūrṇimā runs from 23:02 on Sat 19 Jul to 00:45 on Mon 21 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1902/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 20 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 20 Jul
compat-drikpanchangComparison profileSun 20 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 19thCoveredSunset 20thCoveredRuled
Los Angeles07:02 → 08:4519:0379 min19:020 min19 Jul
Chicago09:02 → 10:4519:2173 min19:210 min19 Jul
Jersey City10:02 → 11:4519:2474 min19:230 min19 Jul
Port of Spain11:02 → 12:4518:3291 min18:320 min19 Jul
London15:02 → 16:4520:0864 min20:070 min19 Jul
Durban16:32 → 18:1516:45108 min16:4689 min19 Jul
Dubai18:43 → 20:2618:5184 min18:5184 min20 Jul
Delhi20:23 → 22:0619:1010 min19:1082 min20 Jul
Kolkata20:23 → 22:0618:140 min18:1485 min20 Jul
Singapore21:57 → 23:4018:110 min18:1195 min20 Jul
Sydney01:02 → 02:4517:060 min17:06111 min20 Jul
Suva02:57 → 04:4017:420 min17:42103 min20 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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