Ruling · Jitāṣṭamī (Jitiya) · 1963

Tuesday 10 September

Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 604 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 Tuesday 10 September

Taken. The only evening Aṣṭamī reaches.

18:45 sunsetpradoṣa ends 20:16
18:2118:4519:0919:3319:5720:2120:45

90 of 90 minutes covered

Evening of Wednesday 11 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:44 sunsetpradoṣa ends 20:15
18:2018:4419:0819:3219:5620:2020:44

0 of 91 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 08:41 on Tue 10 Sep to 06:49 on Wed 11 Sep.

    1963-09-10T00:41:02Z → 1963-09-10T22:49:10Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:45–20:16 on the 10th, 18:44–20:15 on the 11th.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 90 of 90 minutes on the 10th and 0 of 91 on the 11th.

    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 36267 s

  5. 05

    Ruling

    Jitāṣṭamī, Datong, 1963: Tuesday 10 September.

    confidence: determinate

Say it like this

In Datong, Jitāṣṭamī (Jitiya) 1963 falls on Tuesday 10 September. Aṣṭamī runs from 08:41 on Tue 10 Sep to 06:49 on Wed 11 Sep and covers all of pradoṣa that evening.

ahargana.org/datong/festivals/1963/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 10 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 10 Sep
compat-drikpanchangComparison profileTue 10 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 10thCoveredSunset 11thCoveredRuled
Los Angeles17:41 → 15:4919:070 min19:060 min9 Sep
Chicago19:41 → 17:4919:100 min19:080 min9 Sep
Jersey City20:41 → 18:4919:150 min19:130 min9 Sep
Port of Spain20:41 → 18:4918:1039 min18:090 min10 Sep
London01:41 → 23:4919:2888 min19:260 min10 Sep
Durban02:41 → 00:4917:4598 min17:460 min10 Sep
Dubai04:41 → 02:4918:2993 min18:280 min10 Sep
Delhi06:11 → 04:1918:3392 min18:320 min10 Sep
Kolkata06:11 → 04:1917:4693 min17:450 min10 Sep
Singapore08:11 → 06:1918:3595 min18:350 min10 Sep
Sydney10:41 → 08:4917:4299 min17:430 min10 Sep
Suva12:41 → 10:4918:0097 min18:000 min10 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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