Ruling · Rudra Vrata · 1995

Saturday 26 August

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 51 s away. Say “contested”.

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 Saturday 26 August

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

madhyāhna begins 11:56  12:44 madhyāhna ends
Pratipadā begins 12:30:58
11:0811:3211:5612:2012:4413:0813:32

13 of 48 minutes covered, the last 13

Midday of Sunday 27 August

Qualifies with 43 of 48 minutes. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
Pratipadā ends 12:38:41
11:0811:3211:5612:2012:4413:0813:32

43 of 48 minutes covered, the first 43

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 12:31 on Sat 26 Aug to 12:39 on Sun 27 Aug.

    1995-08-26T04:30:58Z → 1995-08-27T04:38:41Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 26th, 11:56–12:44 on the 27th.

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

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 13 of 48 minutes on the 26th and 43 of 48 on the 27th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 291 s < 300 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1995: Saturday 26 August.

    confidence: boundary (margin)

Say it like this

In Baoding, Rudra Vrata 1995 falls on Saturday 26 August. Pratipadā runs from 12:31 on Sat 26 Aug to 12:39 on Sun 27 Aug and covers 13 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 43 minutes; by the rule the first midday is taken. It is 4 min 51 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1995/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 26 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 26 Aug
compat-drikpanchangComparison profileSat 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles21:31 → 21:3912:3148 min12:300 min26 Aug
Chicago23:31 → 23:3912:2848 min12:280 min26 Aug
Jersey City00:31 → 00:3912:3448 min12:340 min26 Aug
Port of Spain00:31 → 00:3911:4448 min11:440 min26 Aug
London05:31 → 05:3912:3848 min12:380 min26 Aug
Durban06:31 → 06:3911:3448 min11:340 min26 Aug
Dubai08:31 → 08:3911:5748 min11:560 min26 Aug
Delhi10:01 → 10:0911:5948 min11:590 min26 Aug
Kolkata10:01 → 10:0911:1448 min11:140 min26 Aug
Singapore12:31 → 12:3912:4348 min12:420 min26 Aug
Sydney14:31 → 14:3911:330 min11:3348 min27 Aug
Suva16:31 → 16:3911:440 min11:4448 min27 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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