Ruling · Rudra Vrata · 1971

Saturday 21 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 191 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 Saturday 21 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

48 of 48 minutes covered

Midday of Sunday 22 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

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 06:53 on Sat 21 Aug to 08:46 on Sun 22 Aug.

    1971-08-20T22:53:20Z → 1971-08-22T00:45:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 21st, 11:57–12:45 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 11470 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1971: Saturday 21 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1971 falls on Saturday 21 August. Pratipadā runs from 06:53 on Sat 21 Aug to 08:46 on Sun 22 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1971/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 21 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 21 Aug
compat-drikpanchangComparison profileSat 21 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 20thCoveredMadhyāhna 22ndCoveredRuled
Los Angeles15:53 → 17:4612:320 min12:320 min21 Aug
Chicago17:53 → 19:4612:300 min12:290 min21 Aug
Jersey City18:53 → 20:4612:350 min12:350 min21 Aug
Port of Spain18:53 → 20:4611:450 min11:450 min21 Aug
London23:53 → 01:4612:390 min12:390 min21 Aug
Durban00:53 → 02:4611:360 min11:350 min21 Aug
Dubai02:53 → 04:4611:580 min11:580 min21 Aug
Delhi04:23 → 06:1612:000 min12:000 min21 Aug
Kolkata04:23 → 06:1611:160 min11:150 min21 Aug
Singapore06:23 → 08:1612:140 min12:140 min21 Aug
Sydney08:53 → 10:4611:350 min11:340 min21 Aug
Suva10:53 → 12:4611:460 min11:4648 min21 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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