Ruling · Jitāṣṭamī (Jitiya) · 2023

Thursday 5 October

Boundaryin Phoenix, under the Rashtriya Panchang method. Both evenings qualify and the rule does not say which to take. Say “contested”.

Decide it for

PhoenixDelhiKolkataSingaporeSydneyJersey City

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two evenings

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

Evening of Thursday 5 October

Taken. Both evenings qualify; the rule is silent, and this one is covered longer.

18:07 sunsetpradoṣa ends 19:46
Aṣṭamī begins 18:05:28
17:4318:0718:3118:5519:1919:4320:07

99 of 99 minutes covered

Evening of Friday 6 October

Qualifies with 93 of 99 minutes. Not taken.

18:06 sunsetpradoṣa ends 19:45
Aṣṭamī ends 19:38:55
17:4218:0618:3018:5419:1819:4220:06

93 of 99 minutes covered, the first 93

Aṣṭamī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 18:05 on Thu 5 Oct to 19:39 on Fri 6 Oct.

    2023-10-06T01:05:29Z → 2023-10-07T02:38:56Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:07–19:46 on the 5th, 18:06–19:45 on the 6th.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 99 of 99 minutes on the 5th and 93 of 99 on the 6th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 106 s < 300 s

  5. 05

    Ruling

    Jitāṣṭamī, Phoenix, 2023: Thursday 5 October.

    confidence: boundary (margin, tie-break-unstated)

Say it like this

In Phoenix, Jitāṣṭamī (Jitiya) 2023 falls on Thursday 5 October. Aṣṭamī runs from 18:05 on Thu 5 Oct to 19:39 on Fri 6 Oct and covers all of pradoṣa that evening. It also reaches the next evening for 93 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 46 s from a threshold: treat the date as contested.

ahargana.org/phoenix/festivals/2023/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 5 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 5 Oct
compat-drikpanchangComparison profileThu 5 Oct
No institution has a recorded ruling for Phoenix.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/jitashtami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīSunset 6thCoveredSunset 7thCoveredRuled
Los Angeles18:05 → 19:3918:3069 min18:290 min5 Oct
Chicago20:05 → 21:3918:24100 min18:220 min6 Oct
Jersey City21:05 → 22:3918:30100 min18:290 min6 Oct
Port of Spain21:05 → 22:3917:5396 min17:530 min6 Oct
London02:05 → 03:3918:27102 min18:250 min6 Oct
Durban03:05 → 04:3918:0092 min18:000 min6 Oct
Dubai05:05 → 06:3918:0198 min18:000 min6 Oct
Delhi06:35 → 08:0918:0298 min18:000 min6 Oct
Kolkata06:35 → 08:0917:2097 min17:190 min6 Oct
Singapore09:05 → 10:3918:5595 min18:550 min6 Oct
Sydney12:05 → 13:3919:0191 min19:020 min6 Oct
Suva13:05 → 14:3918:0493 min18:050 min6 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
jitashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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