Ruling · Jitāṣṭamī (Jitiya) · 2028

Monday 11 September

Boundaryin Chattogram, under the Rashtriya Panchang method. Both evenings qualify and the rule does not say which to take. Say “contested”.

Decide it for

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two evenings

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

Evening of Monday 11 September

Taken. Both evenings qualify; the rule is silent, and this one is covered longer.

17:59 sunsetpradoṣa ends 19:33
Aṣṭamī begins 18:40:23
17:3517:5918:2318:4719:1119:3519:59

52 of 93 minutes covered, the last 52

Evening of Tuesday 12 September

Qualifies with 42 of 93 minutes. Not taken.

17:58 sunsetpradoṣa ends 19:32
Aṣṭamī ends 18:40:22
17:3417:5818:2218:4619:1019:3419:58

42 of 93 minutes covered, the first 42

Aṣṭamī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 18:40 on Mon 11 Sep to 18:40 on Tue 12 Sep.

    2028-09-11T12:40:24Z → 2028-09-12T12:40:22Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:59–19:33 on the 11th, 17:58–19:32 on the 12th.

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

  3. 03

    Rule

    Aṣṭamī must be present during pradoṣa. It covers 52 of 93 minutes on the 11th and 42 of 93 on the 12th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 2454 s

  5. 05

    Ruling

    Jitāṣṭamī, Chattogram, 2028: Monday 11 September.

    confidence: boundary (tie-break-unstated)

Say it like this

In Chattogram, Jitāṣṭamī (Jitiya) 2028 falls on Monday 11 September. Aṣṭamī runs from 18:40 on Mon 11 Sep to 18:40 on Tue 12 Sep and covers 52 of 93 minutes of pradoṣa that evening. It also reaches the next evening for 42 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/chattogram/festivals/2028/jitashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 11 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 11 Sep
compat-drikpanchangComparison profileMon 11 Sep
No institution has a recorded ruling for Chattogram.

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 11thCoveredSunset 12thCoveredRuled
Los Angeles05:40 → 05:4019:0492 min19:020 min11 Sep
Chicago07:40 → 07:4019:0691 min19:040 min11 Sep
Jersey City08:40 → 08:4019:1191 min19:090 min11 Sep
Port of Spain08:40 → 08:4018:0994 min18:080 min11 Sep
London13:40 → 13:4019:2389 min19:210 min11 Sep
Durban14:40 → 14:4017:4698 min17:470 min11 Sep
Dubai16:40 → 16:4018:2793 min18:250 min11 Sep
Delhi18:10 → 18:1018:3093 min18:290 min11 Sep
Kolkata18:10 → 18:1017:4366 min17:4228 min11 Sep
Singapore20:40 → 20:4019:050 min19:0495 min12 Sep
Sydney22:40 → 22:4017:440 min17:4598 min12 Sep
Suva00:40 → 00:4018:000 min18:0196 min12 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

About Ahargaṇa