Ruling · Rudra Vrata · 2027

Wednesday 1 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 420 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 Tuesday 31 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

0 of 48 minutes covered

Midday of Wednesday 1 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

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 23:11 on Tue 31 Aug to 19:51 on Wed 1 Sep.

    2027-08-31T17:41:11Z → 2027-09-01T14:20:54Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 31st, 12:03–12:51 on the 1st.

    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 31st and 48 of 48 on the 1st.

    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 25202 s

  5. 05

    Ruling

    Rudra Vrata, Ujjain, 2027: Wednesday 1 September.

    confidence: determinate

Say it like this

In Ujjain, Rudra Vrata 2027 falls on Wednesday 1 September. Pratipadā runs from 23:11 on Tue 31 Aug to 19:51 on Wed 1 Sep and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2027/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 1 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 1 Sep
compat-drikpanchangComparison profileWed 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles10:41 → 07:2112:2948 min12:290 min31 Aug
Chicago12:41 → 09:2112:2733 min12:260 min31 Aug
Jersey City13:41 → 10:2112:320 min12:320 min1 Sep
Port of Spain13:41 → 10:2111:420 min11:420 min1 Sep
London18:41 → 15:2112:360 min12:3648 min1 Sep
Durban19:41 → 16:2111:330 min11:3248 min1 Sep
Dubai21:41 → 18:2111:550 min11:5548 min1 Sep
Delhi23:11 → 19:5111:570 min11:5748 min1 Sep
Kolkata23:11 → 19:5111:130 min11:1348 min1 Sep
Singapore01:41 → 22:2112:410 min12:4148 min1 Sep
Sydney03:41 → 00:2111:320 min11:3248 min1 Sep
Suva05:41 → 02:2111:430 min11:4348 min1 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