Ruling · Rudra Vrata · 1925

Thursday 20 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 509 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

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

Midday of Thursday 20 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

Pratipadā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 21:15 on Wed 19 Aug to 23:11 on Thu 20 Aug.

    1925-08-19T13:14:35Z → 1925-08-20T15:11:17Z

  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 0 of 48 minutes on the 19th and 48 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 30545 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1925: Thursday 20 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1925 falls on Thursday 20 August. Pratipadā runs from 21:15 on Wed 19 Aug to 23:11 on Thu 20 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1925/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 20 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 20 Aug
compat-drikpanchangComparison profileThu 20 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 Angeles05:15 → 07:1111:3248 min11:320 min19 Aug
Chicago08:15 → 10:1112:3048 min12:300 min19 Aug
Jersey City09:15 → 11:1112:3648 min12:350 min19 Aug
Port of Spain09:15 → 11:1111:4648 min11:450 min19 Aug
London14:15 → 16:1112:400 min12:3948 min20 Aug
Durban15:15 → 17:1111:360 min11:3548 min20 Aug
Dubai17:15 → 19:1111:580 min11:5848 min20 Aug
Delhi18:45 → 20:4112:000 min12:0048 min20 Aug
Kolkata18:45 → 20:4111:160 min11:1648 min20 Aug
Singapore20:15 → 22:1111:440 min11:4448 min20 Aug
Sydney23:15 → 01:1111:350 min11:3548 min20 Aug
Suva01:15 → 03:1111:460 min11:4648 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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