Ruling · Rudra Vrata · 2020

Wednesday 19 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 76 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 Wednesday 19 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 Thursday 20 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 10:42 on Wed 19 Aug to 07:50 on Thu 20 Aug.

    2020-08-19T02:41:40Z → 2020-08-19T23:49:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 19th, 11:57–12:45 on the 20th.

    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 19th and 0 of 48 on the 20th.

    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 4545 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2020: Wednesday 19 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2020 falls on Wednesday 19 August. Pratipadā runs from 10:42 on Wed 19 Aug to 07:50 on Thu 20 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2020/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Aug
Ahargaṇa, classicalDisc centre, no refractionWed 19 Aug
compat-drikpanchangComparison profileWed 19 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles19:42 → 16:5012:3248 min12:320 min19 Aug
Chicago21:42 → 18:5012:3048 min12:290 min19 Aug
Jersey City22:42 → 19:5012:3548 min12:350 min19 Aug
Port of Spain22:42 → 19:5011:4548 min11:450 min19 Aug
London03:42 → 00:5012:3948 min12:390 min19 Aug
Durban04:42 → 01:5011:3648 min11:350 min19 Aug
Dubai06:42 → 03:5011:5848 min11:580 min19 Aug
Delhi08:12 → 05:2012:0048 min12:000 min19 Aug
Kolkata08:12 → 05:2011:1648 min11:160 min19 Aug
Singapore10:42 → 07:5012:4448 min12:440 min19 Aug
Sydney12:42 → 09:5011:350 min11:350 min20 Aug
Suva14:42 → 11:5011:460 min11:464 min20 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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