Ruling · Jitāṣṭamī (Jitiya) · 1957

Monday 16 September

Determinatein Cairo, under the Rashtriya Panchang method. Clear of every threshold by 14 minutes.

Decide it for

CairoDelhiKolkataSingaporeSydneyJersey City

30°04′ N 31°15′ E · Africa/Cairo · GeoNames 360630

The two evenings

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

Evening of Monday 16 September

Taken. The only evening Aṣṭamī reaches.

18:59 sunsetpradoṣa ends 20:33
Aṣṭamī begins 19:12:55
18:3518:5919:2319:4720:1120:3520:59

80 of 93 minutes covered, the last 80

Evening of Tuesday 17 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:58 sunsetpradoṣa ends 20:32
Aṣṭamī ends 18:39:35
18:3418:5819:2219:4620:1020:3420:58

0 of 94 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 19:13 on Mon 16 Sep to 18:40 on Tue 17 Sep.

    1957-09-16T16:12:55Z → 1957-09-17T15:39:35Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:59–20:33 on the 16th, 18:58–20:32 on the 17th.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 80 of 93 minutes on the 16th and 0 of 94 on the 17th.

    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 811 s

  5. 05

    Ruling

    Jitāṣṭamī, Cairo, 1957: Monday 16 September.

    confidence: determinate

Say it like this

In Cairo, Jitāṣṭamī (Jitiya) 1957 falls on Monday 16 September. Aṣṭamī runs from 19:13 on Mon 16 Sep to 18:40 on Tue 17 Sep and covers 80 of 93 minutes of pradoṣa that evening.

ahargana.org/cairo/festivals/1957/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 16 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 16 Sep
compat-drikpanchangComparison profileMon 16 Sep
No institution has a recorded ruling for Cairo.

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 16thCoveredSunset 17thCoveredRuled
Los Angeles09:13 → 08:4018:5893 min18:570 min16 Sep
Chicago11:13 → 10:4018:5893 min18:570 min16 Sep
Jersey City12:13 → 11:4019:0493 min19:020 min16 Sep
Port of Spain12:13 → 11:4018:0695 min18:050 min16 Sep
London17:13 → 16:4019:1391 min19:110 min16 Sep
Durban18:13 → 17:4017:4872 min17:490 min16 Sep
Dubai20:13 → 19:4018:220 min18:2179 min17 Sep
Delhi21:43 → 21:1018:250 min18:2494 min17 Sep
Kolkata21:43 → 21:1017:390 min17:3894 min17 Sep
Singapore23:43 → 23:1018:330 min18:3295 min17 Sep
Sydney02:13 → 01:4017:470 min17:4797 min17 Sep
Suva04:13 → 03:4018:010 min18:0196 min17 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

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