Ruling · Jitāṣṭamī (Jitiya) · 1949

Thursday 15 September

Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 467 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 Thursday 15 September

Taken. The only evening Aṣṭamī reaches.

18:37 sunsetpradoṣa ends 20:09
18:1318:3719:0119:2519:4920:1320:37

92 of 92 minutes covered

Evening of Friday 16 September

Aṣṭamī is absent from pradoṣa. Not taken.

18:35 sunsetpradoṣa ends 20:07
18:1118:3518:5919:2319:4720:1120:35

0 of 93 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 09:59 on Thu 15 Sep to 10:48 on Fri 16 Sep.

    1949-09-15T01:58:32Z → 1949-09-16T02:47:45Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 18:37–20:09 on the 15th, 18:35–20:07 on the 16th.

    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 15th and 0 of 93 on the 16th.

    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 28030 s

  5. 05

    Ruling

    Jitāṣṭamī, Datong, 1949: Thursday 15 September.

    confidence: determinate

Say it like this

In Datong, Jitāṣṭamī (Jitiya) 1949 falls on Thursday 15 September. Aṣṭamī runs from 09:59 on Thu 15 Sep to 10:48 on Fri 16 Sep and covers all of pradoṣa that evening.

ahargana.org/datong/festivals/1949/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 15 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 15 Sep
compat-drikpanchangComparison profileThu 15 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 15thCoveredSunset 16thCoveredRuled
Los Angeles17:59 → 18:4817:5948 min17:580 min14 Sep
Chicago20:59 → 21:4819:0092 min18:580 min15 Sep
Jersey City21:59 → 22:4819:0592 min19:040 min15 Sep
Port of Spain21:59 → 22:4818:0795 min18:060 min15 Sep
London02:59 → 03:4819:1691 min19:130 min15 Sep
Durban03:59 → 04:4817:4897 min17:480 min15 Sep
Dubai05:59 → 06:4818:2394 min18:220 min15 Sep
Delhi07:29 → 08:1818:2793 min18:250 min15 Sep
Kolkata07:29 → 08:1817:4094 min17:390 min15 Sep
Singapore09:29 → 10:1818:3395 min18:330 min15 Sep
Sydney11:59 → 12:4817:4697 min17:470 min15 Sep
Suva13:59 → 14:4818:0196 min18:010 min15 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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