Ruling · Śiva Śayanotsava · 1958

Monday 30 June

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 249 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 Monday 30 June

Taken. The only evening Pūrṇimā reaches.

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

73 of 73 minutes covered

Evening of Tuesday 1 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:47 sunsetpradoṣa ends 21:00
19:2319:4720:1120:3520:5921:2321:47

0 of 73 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 15:38 on Mon 30 Jun to 14:04 on Tue 1 Jul.

    1958-06-30T07:38:06Z → 1958-07-01T06:04:29Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:47–21:00 on the 30th, 19:47–21:00 on the 1st.

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

  3. 03

    Rule

    Pūrṇimā must be present during pradoṣa. It covers 73 of 73 minutes on the 30th and 0 of 73 on the 1st.

    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 14938 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1958: Monday 30 June.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1958 falls on Monday 30 June. Pūrṇimā runs from 15:38 on Mon 30 Jun to 14:04 on Tue 1 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1958/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 30 Jun
Ahargaṇa, classicalDisc centre, no refractionMon 30 Jun
compat-drikpanchangComparison profileMon 30 Jun
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 30thCoveredSunset 1stCoveredRuled
Los Angeles00:38 → 23:0420:0877 min20:080 min30 Jun
Chicago02:38 → 01:0420:2971 min20:290 min30 Jun
Jersey City03:38 → 02:0420:3172 min20:310 min30 Jun
Port of Spain03:38 → 02:0418:3290 min18:320 min30 Jun
London08:38 → 07:0421:2160 min21:210 min30 Jun
Durban09:38 → 08:0417:06110 min17:070 min30 Jun
Dubai11:38 → 10:0419:1283 min19:120 min30 Jun
Delhi13:08 → 11:3419:2381 min19:230 min30 Jun
Kolkata13:08 → 11:3418:2584 min18:250 min30 Jun
Singapore15:08 → 13:3418:4495 min18:440 min30 Jun
Sydney17:38 → 16:0416:5671 min16:560 min30 Jun
Suva19:38 → 18:0417:410 min17:4123 min1 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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