Ruling · Jitāṣṭamī (Jitiya) · 1903

Monday 14 September

Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 518 minutes.

Decide it for

DatongDelhiKolkataSingaporeSydneyJersey City

40°06′ N 113°17′ E · Asia/Shanghai · GeoNames 2037799

The two evenings

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

Evening of Monday 14 September

Taken. The only evening Aṣṭamī reaches.

18:40 sunsetpradoṣa ends 20:11
18:1618:4019:0419:2819:5220:1620:40

92 of 92 minutes covered

Evening of Tuesday 15 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:38 sunsetpradoṣa ends 20:10
18:1418:3819:0219:2619:5020:1420:38

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 10:02 on Mon 14 Sep to 08:18 on Tue 15 Sep.

    1903-09-14T02:01:36Z → 1903-09-15T00:18:22Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:40–20:11 on the 14th, 18:38–20:10 on the 15th.

    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 14th and 0 of 92 on the 15th.

    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 31082 s

  5. 05

    Ruling

    Jitāṣṭamī, Datong, 1903: Monday 14 September.

    confidence: determinate

Say it like this

In Datong, Jitāṣṭamī (Jitiya) 1903 falls on Monday 14 September. Aṣṭamī runs from 10:02 on Mon 14 Sep to 08:18 on Tue 15 Sep and covers all of pradoṣa that evening.

ahargana.org/datong/festivals/1903/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 14 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 14 Sep
compat-drikpanchangComparison profileMon 14 Sep
No institution has a recorded ruling for Datong.

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 14thCoveredSunset 15thCoveredRuled
Los Angeles18:02 → 16:1818:020 min18:010 min13 Sep
Chicago20:02 → 18:1818:0315 min18:020 min14 Sep
Jersey City21:02 → 19:1818:0970 min18:070 min14 Sep
Port of Spain22:02 → 20:1818:0894 min18:070 min14 Sep
London02:02 → 00:1818:2090 min18:180 min14 Sep
Durban04:02 → 02:1817:4797 min17:470 min14 Sep
Dubai05:43 → 03:5918:0693 min18:050 min14 Sep
Delhi07:23 → 05:3918:2093 min18:190 min14 Sep
Kolkata07:23 → 05:3917:3393 min17:320 min14 Sep
Singapore08:57 → 07:1317:5995 min17:590 min14 Sep
Sydney12:02 → 10:1817:4598 min17:450 min14 Sep
Suva13:57 → 12:1317:5596 min17:560 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

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