Ruling · Rudra Vrata · 1957

Monday 26 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 174 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Sunday 25 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

0 of 48 minutes covered

Midday of Monday 26 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 19:33 on Sun 25 Aug to 15:38 on Mon 26 Aug.

    1957-08-25T11:32:32Z → 1957-08-26T07:38:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 25th, 11:56–12:44 on the 26th.

    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 25th and 48 of 48 on the 26th.

    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 10460 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1957: Monday 26 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1957 falls on Monday 26 August. Pratipadā runs from 19:33 on Sun 25 Aug to 15:38 on Mon 26 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1957/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 26 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 26 Aug
compat-drikpanchangComparison profileMon 26 Aug
No institution has a recorded ruling for Baoding.

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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles04:33 → 00:3812:3148 min12:300 min25 Aug
Chicago06:33 → 02:3812:2848 min12:280 min25 Aug
Jersey City07:33 → 03:3812:3448 min12:340 min25 Aug
Port of Spain07:33 → 03:3811:4448 min11:440 min25 Aug
London12:33 → 08:3812:3848 min12:380 min25 Aug
Durban13:33 → 09:3811:340 min11:340 min26 Aug
Dubai15:33 → 11:3811:570 min11:560 min26 Aug
Delhi17:03 → 13:0811:590 min11:5948 min26 Aug
Kolkata17:03 → 13:0811:150 min11:1448 min26 Aug
Singapore19:03 → 15:0812:130 min12:1248 min26 Aug
Sydney21:33 → 17:3811:340 min11:3348 min26 Aug
Suva23:33 → 19:3811:450 min11:4448 min26 Aug
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

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