Ruling · Śiva Śayanotsava · 2073

Tuesday 18 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 362 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 Tuesday 18 July

Taken. The only evening Pūrṇimā reaches.

19:41 sunsetpradoṣa ends 20:57
19:1719:4120:0520:2920:5321:1721:41

76 of 76 minutes covered

Evening of Wednesday 19 July

Pūrṇimā is absent from pradoṣa. Not taken.

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

0 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 13:38 on Tue 18 Jul to 13:05 on Wed 19 Jul.

    2073-07-18T05:38:23Z → 2073-07-19T05:05:25Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:41–20:57 on the 18th, 19:40–20:56 on the 19th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 76 of 76 minutes on the 18th and 0 of 76 on the 19th.

    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 21744 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 2073: Tuesday 18 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 2073 falls on Tuesday 18 July. Pūrṇimā runs from 13:38 on Tue 18 Jul to 13:05 on Wed 19 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2073/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 18 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 18 Jul
compat-drikpanchangComparison profileTue 18 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 18thCoveredSunset 19thCoveredRuled
Los Angeles22:38 → 22:0520:0379 min20:030 min18 Jul
Chicago00:38 → 00:0520:2174 min20:210 min18 Jul
Jersey City01:38 → 01:0520:2474 min20:230 min18 Jul
Port of Spain01:38 → 01:0518:3291 min18:320 min18 Jul
London06:38 → 06:0521:0764 min21:060 min18 Jul
Durban07:38 → 07:0517:16108 min17:170 min18 Jul
Dubai09:38 → 09:0519:1084 min19:100 min18 Jul
Delhi11:08 → 10:3519:2082 min19:190 min18 Jul
Kolkata11:08 → 10:3518:2385 min18:230 min18 Jul
Singapore13:38 → 13:0519:1795 min19:170 min18 Jul
Sydney15:38 → 15:0517:07111 min17:070 min18 Jul
Suva17:38 → 17:0517:48103 min17:480 min18 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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