Ruling · Śiva Śayanotsava · 1908

Sunday 12 July

Boundaryin Lima, under the Rashtriya Panchang method. Pūrṇimā reaches pradoṣa on neither day and the rule does not say what then. Say “contested”.

Decide it for

LimaDelhiKolkataSingaporeSydneyJersey City

12°03′ S 77°02′ W · America/Lima · GeoNames 3936456

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Sunday 12 July

Taken. Pūrṇimā reaches neither evening; this is the day it falls on.

17:48 sunsetpradoṣa ends 19:29
17:2417:4818:1218:3619:0019:2419:48

0 of 100 minutes covered

Evening of Monday 13 July

Pūrṇimā is absent from pradoṣa. Not taken.

17:49 sunsetpradoṣa ends 19:29
17:2517:4918:1318:3719:0119:2519:49

0 of 100 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 19:57 on Sun 12 Jul to 16:39 on Mon 13 Jul.

    1908-07-13T01:06:06Z → 1908-07-13T21:47:43Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:48–19:29 on the 12th, 17:49–19:29 on the 13th.

    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 100 minutes on the 12th and 0 of 100 on the 13th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither evening qualifies. The day the tithi falls on is taken.

    priority: unstated → tithi-day · margin 1711 s

  5. 05

    Ruling

    Śiva Śayanotsava, Lima, 1908: Sunday 12 July.

    confidence: boundary (absent-unstated)

Say it like this

In Lima, Śiva Śayanotsava 1908 falls on Sunday 12 July. Pūrṇimā runs from 19:57 on Sun 12 Jul to 16:39 on Mon 13 Jul, and reaches pradoṣa on neither day.

ahargana.org/lima/festivals/1908/shiva-shayanotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 12 Jul
compat-drikpanchangComparison profileSun 12 Jul
No institution has a recorded ruling for Lima.

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 13thCoveredSunset 14thCoveredRuled
Los Angeles17:06 → 13:4819:050 min19:050 min12 Jul
Chicago19:06 → 15:4819:250 min19:240 min12 Jul
Jersey City20:06 → 16:4819:270 min19:270 min12 Jul
Port of Spain21:06 → 17:4818:320 min18:320 min12 Jul
London01:06 → 21:4820:1362 min20:120 min13 Jul
Durban03:06 → 23:4817:12109 min17:130 min13 Jul
Dubai04:47 → 01:2918:5283 min18:520 min13 Jul
Delhi06:36 → 03:1819:2181 min19:210 min13 Jul
Kolkata06:36 → 03:1818:2485 min18:240 min13 Jul
Singapore08:06 → 04:4818:1695 min18:160 min13 Jul
Sydney11:06 → 07:4817:02112 min17:030 min13 Jul
Suva13:01 → 09:4317:40103 min17:400 min13 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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