Ruling · Jitāṣṭamī (Jitiya) · 2019

Saturday 21 September

Boundaryin Riyadh, under the Rashtriya Panchang method. A threshold is only 0 min 08 s away. Say “contested”.

Decide it for

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two evenings

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

Evening of Saturday 21 September

Taken. The only evening Aṣṭamī reaches.

17:51 sunsetpradoṣa ends 19:26
Aṣṭamī begins 17:51:00
17:2717:5118:1518:3919:0319:2719:51

95 of 95 minutes covered

Evening of Sunday 22 September

Aṣṭamī is absent from pradoṣa. Not taken.

17:50 sunsetpradoṣa ends 19:25
17:2617:5018:1418:3819:0219:2619:50

0 of 95 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 17:51 on Sat 21 Sep to 17:20 on Sun 22 Sep.

    2019-09-21T14:51:01Z → 2019-09-22T14:20:23Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:51–19:26 on the 21st, 17:50–19:25 on the 22nd.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 95 of 95 minutes on the 21st and 0 of 95 on the 22nd.

    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 8 s < 300 s

  5. 05

    Ruling

    Jitāṣṭamī, Riyadh, 2019: Saturday 21 September.

    confidence: boundary (margin)

Say it like this

In Riyadh, Jitāṣṭamī (Jitiya) 2019 falls on Saturday 21 September. Aṣṭamī runs from 17:51 on Sat 21 Sep to 17:20 on Sun 22 Sep and covers all of pradoṣa that evening. It is 0 min 08 s from a threshold: treat the date as contested.

ahargana.org/riyadh/festivals/2019/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 21 Sep
compat-drikpanchangComparison profileSat 21 Sep
No institution has a recorded ruling for Riyadh.

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 21stCoveredSunset 22ndCoveredRuled
Los Angeles07:51 → 07:2018:5195 min18:500 min21 Sep
Chicago09:51 → 09:2018:5094 min18:480 min21 Sep
Jersey City10:51 → 10:2018:5594 min18:540 min21 Sep
Port of Spain10:51 → 10:2018:0395 min18:020 min21 Sep
London15:51 → 15:2019:0294 min18:590 min21 Sep
Durban16:51 → 16:2017:5195 min17:520 min21 Sep
Dubai18:51 → 18:2018:1760 min18:165 min21 Sep
Delhi20:21 → 19:5018:190 min18:1892 min22 Sep
Kolkata20:21 → 19:5017:340 min17:3395 min22 Sep
Singapore22:51 → 22:2019:010 min19:0195 min22 Sep
Sydney00:51 → 00:2017:500 min17:5195 min22 Sep
Suva02:51 → 02:2018:020 min18:0295 min22 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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