Ruling · Śiva Śayanotsava · 1998

Thursday 9 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 181 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 Wednesday 8 July

Pūrṇimā is absent from pradoṣa. Not taken.

19:46 sunsetpradoṣa ends 21:00
19:2219:4620:1020:3420:5821:2221:46

0 of 74 minutes covered

Evening of Thursday 9 July

Taken. The only evening Pūrṇimā reaches.

19:45 sunsetpradoṣa ends 21:00
19:2119:4520:0920:3320:5721:2121:45

74 of 74 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 00:25 on Thu 9 Jul to 00:01 on Fri 10 Jul.

    1998-07-08T16:24:57Z → 1998-07-09T16:00:53Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:46–21:00 on the 8th, 19:45–21:00 on the 9th.

    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 74 minutes on the 8th and 74 of 74 on the 9th.

    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 10882 s

  5. 05

    Ruling

    Śiva Śayanotsava, Baoding, 1998: Thursday 9 July.

    confidence: determinate

Say it like this

In Baoding, Śiva Śayanotsava 1998 falls on Thursday 9 July. Pūrṇimā runs from 00:25 on Thu 9 Jul to 00:01 on Fri 10 Jul and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1998/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 9 Jul
compat-drikpanchangComparison profileThu 9 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 8thCoveredSunset 9thCoveredRuled
Los Angeles09:25 → 09:0120:0778 min20:070 min8 Jul
Chicago11:25 → 11:0120:2772 min20:270 min8 Jul
Jersey City12:25 → 12:0120:2973 min20:290 min8 Jul
Port of Spain12:25 → 12:0118:3290 min18:320 min8 Jul
London17:25 → 17:0121:1761 min21:160 min8 Jul
Durban18:25 → 18:0117:1035 min17:1150 min9 Jul
Dubai20:25 → 20:0119:1210 min19:1249 min9 Jul
Delhi21:55 → 21:3119:220 min19:2281 min9 Jul
Kolkata21:55 → 21:3118:250 min18:2585 min9 Jul
Singapore00:25 → 00:0119:150 min19:1595 min9 Jul
Sydney02:25 → 02:0117:000 min17:00112 min9 Jul
Suva04:25 → 04:0117:440 min17:44103 min9 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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