Ruling · Jitāṣṭamī (Jitiya) · 2025

Saturday 13 September

Determinatein Chicago, under the Rashtriya Panchang method. Clear of every threshold by 28 minutes.

Decide it for

ChicagoDelhiKolkataSingaporeSydneyJersey City

41°51′ N 87°39′ W · America/Chicago · GeoNames 4887398

The two evenings

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

Evening of Saturday 13 September

Taken. The only evening Aṣṭamī reaches.

19:03 sunsetpradoṣa ends 20:34
18:3919:0319:2719:5120:1520:3921:03

92 of 92 minutes covered

Evening of Sunday 14 September

Aṣṭamī is absent from pradoṣa. Not taken.

19:01 sunsetpradoṣa ends 20:33
18:3719:0119:2519:4920:1320:3721:01

0 of 92 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 18:35 on Sat 13 Sep to 16:37 on Sun 14 Sep.

    2025-09-13T23:34:53Z → 2025-09-14T21:36:36Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 19:03–20:34 on the 13th, 19:01–20:33 on the 14th.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 92 of 92 minutes on the 13th and 0 of 92 on the 14th.

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

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 1666 s

  5. 05

    Ruling

    Jitāṣṭamī, Chicago, 2025: Saturday 13 September.

    confidence: determinate

Say it like this

In Chicago, Jitāṣṭamī (Jitiya) 2025 falls on Saturday 13 September. Aṣṭamī runs from 18:35 on Sat 13 Sep to 16:37 on Sun 14 Sep and covers all of pradoṣa that evening.

ahargana.org/chicago/festivals/2025/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 13 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 13 Sep
compat-drikpanchangComparison profileSat 13 Sep
No institution has a recorded ruling for Chicago.

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 13thCoveredSunset 14thCoveredRuled
Los Angeles16:35 → 14:3719:0193 min19:000 min13 Sep
Chicago18:35 → 16:3719:0392 min19:010 min13 Sep
Jersey City19:35 → 17:3719:0865 min19:060 min13 Sep
Port of Spain19:35 → 17:3718:087 min18:070 min13 Sep
London00:35 → 22:3719:190 min19:1791 min14 Sep
Durban01:35 → 23:3717:470 min17:4897 min14 Sep
Dubai03:35 → 01:3718:250 min18:2494 min14 Sep
Delhi05:05 → 03:0718:280 min18:2793 min14 Sep
Kolkata05:05 → 03:0717:420 min17:4194 min14 Sep
Singapore07:35 → 05:3719:040 min19:0495 min14 Sep
Sydney09:35 → 07:3717:450 min17:4697 min14 Sep
Suva11:35 → 09:3718:010 min18:0196 min14 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
jitashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s