Ruling · Janmāṣṭamī (Kṛṣṇa Janmāṣṭamī) · 1981

Saturday 22 August

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 409 minutes.

Decide it for

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

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Friday 21 August

Aṣṭamī is absent from niśītha. Not taken.

niśītha begins 23:32  00:20 niśītha ends
22:4423:0823:3223:5600:2000:4401:08

0 of 48 minutes covered

Night of Saturday 22 August

Taken. The only night Aṣṭamī reaches.

niśītha begins 23:32  00:20 niśītha ends
22:4423:0823:3223:5600:2000:4401:08

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 09:24 on Sat 22 Aug to 07:09 on Sun 23 Aug.

    1981-08-22T03:23:47Z → 1981-08-23T01:08:30Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:32–00:20 on the 21st, 23:32–00:20 on the 22nd.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during niśītha. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.

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

  4. 04

    Tie-break

    Only one night qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 24536 s

  5. 05

    Ruling

    Janmāṣṭamī, Chattogram, 1981: Saturday 22 August.

    confidence: determinate

Say it like this

In Chattogram, Janmāṣṭamī (Krishna Janmashtami) 1981 falls on Saturday 22 August. Aṣṭamī runs from 09:24 on Sat 22 Aug to 07:09 on Sun 23 Aug and covers all of niśītha that night.

ahargana.org/chattogram/festivals/1981/janmashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 22 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 22 Aug
compat-drikpanchangComparison profileSat 22 Aug
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/janmashtami · ruleset 2026.3-draft

Month
Śrāvaṇa, amānta
Pakṣa · aṅga
Kṛṣṇa · Aṣṭamī
Kāla
Niśītha
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 103

“K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103. The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīNiśītha 22ndCoveredNiśītha 23rdCoveredRuled
Los Angeles20:24 → 18:0900:320 min00:320 min21 Aug
Chicago22:24 → 20:0900:300 min00:290 min21 Aug
Jersey City23:24 → 21:0900:350 min00:350 min21 Aug
Port of Spain23:24 → 21:0923:450 min23:450 min21 Aug
London04:24 → 02:0900:4048 min00:390 min22 Aug
Durban05:24 → 03:0923:3448 min23:340 min22 Aug
Dubai07:24 → 05:0923:5848 min23:570 min22 Aug
Delhi08:54 → 06:3900:0048 min00:000 min22 Aug
Kolkata08:54 → 06:3923:1548 min23:150 min22 Aug
Singapore10:54 → 08:3900:1348 min00:130 min22 Aug
Sydney13:24 → 11:0923:3448 min23:330 min22 Aug
Suva15:24 → 13:0923:4548 min23:450 min22 Aug
Profile · tradition
pac-rp@2026.1 · smarta
Rule
janmashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa