Ruling · Śiva Śayanotsava · 1972

Tuesday 25 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 251 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 25 July

Taken. The only evening Pūrṇimā reaches.

19:36 sunsetpradoṣa ends 20:53
19:1219:3620:0020:2420:4821:1221:36

77 of 77 minutes covered

Evening of Wednesday 26 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:35 sunsetpradoṣa ends 20:52
19:1119:3519:5920:2320:4721:1121:35

0 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 15:15 on Tue 25 Jul to 15:24 on Wed 26 Jul.

    1972-07-25T07:15:10Z → 1972-07-26T07:23:32Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:36–20:53 on the 25th, 19:35–20:52 on the 26th.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 77 of 77 minutes on the 25th and 0 of 77 on the 26th.

    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 15080 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1972: Tuesday 25 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1972 falls on Tuesday 25 July. Pūrṇimā runs from 15:15 on Tue 25 Jul to 15:24 on Wed 26 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1972/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 25 Jul
compat-drikpanchangComparison profileTue 25 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 25thCoveredSunset 26thCoveredRuled
Los Angeles00:15 → 00:2419:5980 min19:580 min25 Jul
Chicago02:15 → 02:2420:1675 min20:150 min25 Jul
Jersey City03:15 → 03:2420:1876 min20:170 min25 Jul
Port of Spain03:15 → 03:2418:3191 min18:310 min25 Jul
London08:15 → 08:2420:5966 min20:570 min25 Jul
Durban09:15 → 09:2417:19107 min17:200 min25 Jul
Dubai11:15 → 11:2419:0785 min19:070 min25 Jul
Delhi12:45 → 12:5419:1683 min19:160 min25 Jul
Kolkata12:45 → 12:5418:2186 min18:200 min25 Jul
Singapore14:45 → 14:5418:4695 min18:460 min25 Jul
Sydney17:15 → 17:2417:10105 min17:1113 min25 Jul
Suva19:15 → 19:2417:4916 min17:5094 min26 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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