Ruling · Rudra Vrata · 1987

Tuesday 25 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 434 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 Monday 24 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 12:56  13:44 madhyāhna ends
12:0812:3212:5613:2013:4414:0814:32

0 of 48 minutes covered

Midday of Tuesday 25 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 12:56  13:44 madhyāhna ends
12:0812:3212:5613:2013:4414:0814:32

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 20:59 on Mon 24 Aug to 22:54 on Tue 25 Aug.

    1987-08-24T11:58:37Z → 1987-08-25T13:53:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:56–13:44 on the 24th, 12:56–13:44 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 26054 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1987: Tuesday 25 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1987 falls on Tuesday 25 August. Pratipadā runs from 20:59 on Mon 24 Aug to 22:54 on Tue 25 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1987/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Aug
Ahargaṇa, classicalDisc centre, no refractionTue 25 Aug
compat-drikpanchangComparison profileTue 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles04:59 → 06:5412:3148 min12:310 min24 Aug
Chicago06:59 → 08:5412:2948 min12:280 min24 Aug
Jersey City07:59 → 09:5412:3448 min12:340 min24 Aug
Port of Spain07:59 → 09:5411:4448 min11:440 min24 Aug
London12:59 → 14:5412:3828 min12:3848 min24 Aug
Durban13:59 → 15:5411:350 min11:3448 min25 Aug
Dubai15:59 → 17:5411:570 min11:5748 min25 Aug
Delhi17:29 → 19:2411:590 min11:5948 min25 Aug
Kolkata17:29 → 19:2411:150 min11:1548 min25 Aug
Singapore19:59 → 21:5412:430 min12:4348 min25 Aug
Sydney21:59 → 23:5411:340 min11:3448 min25 Aug
Suva23:59 → 01:5411:450 min11:4548 min25 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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