Ruling · Rudra Vrata · 2026

Friday 11 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 182 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 Friday 11 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

48 of 48 minutes covered

Midday of Saturday 12 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 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 08:57 on Fri 11 Sep to 07:47 on Sat 12 Sep.

    2026-09-11T03:27:00Z → 2026-09-12T02:16:52Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 11th, 11:59–12:47 on the 12th.

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

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 10946 s

  5. 05

    Ruling

    Rudra Vrata, Ujjain, 2026: Friday 11 September.

    confidence: determinate

Say it like this

In Ujjain, Rudra Vrata 2026 falls on Friday 11 September. Pratipadā runs from 08:57 on Fri 11 Sep to 07:47 on Sat 12 Sep and covers all of madhyāhna that midday.

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

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 11 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 11 Sep
compat-drikpanchangComparison profileFri 11 Sep
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/rudra-vrata · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Pratipadā
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“S 1 Rudra vrata (purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāMadhyāhna 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles20:27 → 19:1712:2548 min12:250 min11 Sep
Chicago22:27 → 21:1712:2348 min12:220 min11 Sep
Jersey City23:27 → 22:1712:2948 min12:280 min11 Sep
Port of Spain23:27 → 22:1711:3948 min11:380 min11 Sep
London04:27 → 03:1712:3348 min12:320 min11 Sep
Durban05:27 → 04:1711:2948 min11:280 min11 Sep
Dubai07:27 → 06:1711:5148 min11:510 min11 Sep
Delhi08:57 → 07:4711:5448 min11:530 min11 Sep
Kolkata08:57 → 07:4711:0948 min11:090 min11 Sep
Singapore11:27 → 10:1712:3748 min12:370 min11 Sep
Sydney13:27 → 12:1711:280 min11:2848 min12 Sep
Suva15:27 → 14:1711:390 min11:3948 min12 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rudra-vrata@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s