Ruling · Mahānavamī · 2026

Monday 19 October

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 15 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

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

Midday of Monday 19 October

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Tuesday 20 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
Navamī ends 12:50:55
11:0011:2411:4812:1212:3613:0013:24

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 10:52 on Mon 19 Oct to 12:51 on Tue 20 Oct.

    2026-10-19T05:22:16Z → 2026-10-20T07:20:56Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:48–12:36 on the 20th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 48 of 48 on the 20th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 921 s

  5. 05

    Ruling

    Mahānavamī, Ujjain, 2026: Monday 19 October.

    confidence: determinate

Say it like this

In Ujjain, Mahānavamī 2026 falls on Monday 19 October. Navamī runs from 10:52 on Mon 19 Oct to 12:51 on Tue 20 Oct and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/ujjain/festivals/2026/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 19 Oct
compat-drikpanchangComparison profileMon 19 Oct
No institution has a recorded ruling for Ujjain.

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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles22:22 → 00:2112:1448 min12:130 min19 Oct
Chicago00:22 → 02:2112:1148 min12:110 min19 Oct
Jersey City01:22 → 03:2112:1748 min12:170 min19 Oct
Port of Spain01:22 → 03:2111:2748 min11:270 min19 Oct
London06:22 → 08:2112:2148 min12:210 min19 Oct
Durban07:22 → 09:2111:1748 min11:170 min19 Oct
Dubai09:22 → 11:2111:4048 min11:390 min19 Oct
Delhi10:52 → 12:5111:4248 min11:4248 min19 Oct
Kolkata10:52 → 12:5110:5748 min10:5748 min19 Oct
Singapore13:22 → 15:2112:260 min12:2548 min20 Oct
Sydney16:22 → 18:2112:170 min12:1648 min20 Oct
Suva17:22 → 19:2111:270 min11:2748 min20 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