Ruling · Mahānavamī · 1982

Tuesday 26 October

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 440 minutes.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Monday 25 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Midday of Tuesday 26 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

48 of 48 minutes covered

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 19:20 on Mon 25 Oct to 21:23 on Tue 26 Oct.

    1982-10-25T13:20:11Z → 1982-10-26T15:23:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 25th, 11:13–12:01 on the 26th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 26370 s

  5. 05

    Ruling

    Mahānavamī, Chattogram, 1982: Tuesday 26 October.

    confidence: determinate

Say it like this

In Chattogram, Mahānavamī 1982 falls on Tuesday 26 October. Navamī runs from 19:20 on Mon 25 Oct to 21:23 on Tue 26 Oct and covers all of madhyāhna that midday.

ahargana.org/chattogram/festivals/1982/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 26 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 26 Oct
compat-drikpanchangComparison profileTue 26 Oct
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/mahanavami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles06:20 → 08:2312:1348 min12:130 min25 Oct
Chicago08:20 → 10:2312:1048 min12:100 min25 Oct
Jersey City09:20 → 11:2312:1648 min12:160 min25 Oct
Port of Spain09:20 → 11:2311:2648 min11:260 min25 Oct
London13:20 → 15:2311:200 min11:2048 min26 Oct
Durban15:20 → 17:2311:160 min11:1648 min26 Oct
Dubai17:20 → 19:2311:390 min11:3948 min26 Oct
Delhi18:50 → 20:5311:410 min11:4148 min26 Oct
Kolkata18:50 → 20:5310:570 min10:5648 min26 Oct
Singapore21:20 → 23:2312:250 min12:2548 min26 Oct
Sydney23:20 → 01:2311:160 min11:1648 min26 Oct
Suva01:20 → 03:2311:270 min11:2648 min26 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahanavami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa