Ruling · Rudra Vrata · 1997

Tuesday 2 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 84 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 Tuesday 2 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

48 of 48 minutes covered

Midday of Wednesday 3 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 07:52 on Tue 2 Sep to 10:29 on Wed 3 Sep.

    1997-09-01T23:51:34Z → 1997-09-03T02:29:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 2nd, 11:53–12:41 on the 3rd.

    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 2nd and 0 of 48 on the 3rd.

    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 5037 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1997: Tuesday 2 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1997 falls on Tuesday 2 September. Pratipadā runs from 07:52 on Tue 2 Sep to 10:29 on Wed 3 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 2 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 2 Sep
compat-drikpanchangComparison profileTue 2 Sep
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 1stCoveredMadhyāhna 3rdCoveredRuled
Los Angeles16:52 → 19:2912:290 min12:280 min2 Sep
Chicago18:52 → 21:2912:260 min12:250 min2 Sep
Jersey City19:52 → 22:2912:320 min12:310 min2 Sep
Port of Spain19:52 → 22:2911:420 min11:410 min2 Sep
London00:52 → 03:2912:360 min12:350 min2 Sep
Durban01:52 → 04:2911:320 min11:310 min2 Sep
Dubai03:52 → 06:2911:550 min11:540 min2 Sep
Delhi05:22 → 07:5911:570 min11:560 min2 Sep
Kolkata05:22 → 07:5911:120 min11:120 min2 Sep
Singapore07:52 → 10:2912:410 min12:400 min2 Sep
Sydney09:52 → 12:2911:310 min11:3148 min2 Sep
Suva11:52 → 14:2911:430 min11:4248 min2 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

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