Ruling · Navarātrārambha (Śāradīya Navarātri) · 2026

Sunday 11 October

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 522 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 Saturday 10 October

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Sunday 11 October

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 21:20 on Sat 10 Oct to 21:32 on Sun 11 Oct.

    2026-10-10T15:50:05Z → 2026-10-11T16:01:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 10th, 11:50–12:38 on the 11th.

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

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.

    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: paraviddha → only-day · margin 31338 s

  5. 05

    Ruling

    Navarātrārambha, Ujjain, 2026: Sunday 11 October.

    confidence: determinate

Say it like this

In Ujjain, Navarātrārambha (Navratri) 2026 falls on Sunday 11 October. Pratipadā runs from 21:20 on Sat 10 Oct to 21:32 on Sun 11 Oct and covers all of madhyāhna that midday.

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

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 11 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 11 Oct
compat-drikpanchangComparison profileSun 11 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/navaratra-arambha · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Pratipadā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 1 Navaratrarambha (paraviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāMadhyāhna 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles08:50 → 09:0212:1648 min12:150 min10 Oct
Chicago10:50 → 11:0212:1348 min12:130 min10 Oct
Jersey City11:50 → 12:0212:1948 min12:190 min10 Oct
Port of Spain11:50 → 12:0211:2927 min11:2933 min11 Oct
London16:50 → 17:0212:230 min12:2348 min11 Oct
Durban17:50 → 18:0211:190 min11:1948 min11 Oct
Dubai19:50 → 20:0211:420 min11:4148 min11 Oct
Delhi21:20 → 21:3211:440 min11:4448 min11 Oct
Kolkata21:20 → 21:3210:590 min10:5948 min11 Oct
Singapore23:50 → 00:0212:280 min12:2748 min11 Oct
Sydney02:50 → 03:0212:190 min12:1848 min11 Oct
Suva03:50 → 04:0211:300 min11:2948 min11 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
navaratra-arambha@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s