Ruling · Rudra Vrata · 1952

Thursday 21 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 609 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 Thursday 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 Friday 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 23:20 on Wed 20 Aug to 01:48 on Fri 22 Aug.

    1952-08-20T15:20:20Z → 1952-08-21T17:47:51Z

  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 36532 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1952: Thursday 21 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1952 falls on Thursday 21 August. Pratipadā runs from 23:20 on Wed 20 Aug to 01:48 on Fri 22 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1952/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 21 Aug
compat-drikpanchangComparison profileThu 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 21stCoveredRuled
Los Angeles08:20 → 10:4812:3248 min12:320 min20 Aug
Chicago10:20 → 12:4812:2948 min12:2919 min20 Aug
Jersey City11:20 → 13:4812:3548 min12:3548 min20 Aug
Port of Spain11:20 → 13:4811:4548 min11:4548 min20 Aug
London16:20 → 18:4812:390 min12:3948 min21 Aug
Durban17:20 → 19:4811:350 min11:3548 min21 Aug
Dubai19:20 → 21:4811:580 min11:5848 min21 Aug
Delhi20:50 → 23:1812:000 min12:0048 min21 Aug
Kolkata20:50 → 23:1811:160 min11:1648 min21 Aug
Singapore22:50 → 01:1812:140 min12:1448 min21 Aug
Sydney01:20 → 03:4811:350 min11:3548 min21 Aug
Suva03:20 → 05:4811:460 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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