Ruling · Rudra Vrata · 1906

Monday 20 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 150 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 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

Midday of Tuesday 21 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 09:27 on Mon 20 Aug to 08:47 on Tue 21 Aug.

    1906-08-20T01:27:17Z → 1906-08-21T00:46:39Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 20th, 11:57–12:45 on the 21st.

    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 20th and 0 of 48 on the 21st.

    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 9003 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1906: Monday 20 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1906 falls on Monday 20 August. Pratipadā runs from 09:27 on Mon 20 Aug to 08:47 on Tue 21 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1906/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 20 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 20 Aug
compat-drikpanchangComparison profileMon 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles17:27 → 16:4711:3248 min11:320 min20 Aug
Chicago19:27 → 18:4711:3048 min11:290 min20 Aug
Jersey City20:27 → 19:4711:3548 min11:350 min20 Aug
Port of Spain21:27 → 20:4711:4548 min11:450 min20 Aug
London01:27 → 00:4711:3948 min11:390 min20 Aug
Durban03:27 → 02:4711:3648 min11:350 min20 Aug
Dubai05:08 → 04:2811:3948 min11:390 min20 Aug
Delhi06:57 → 06:1712:0048 min12:000 min20 Aug
Kolkata06:57 → 06:1711:1648 min11:160 min20 Aug
Singapore08:27 → 07:4711:4448 min11:440 min20 Aug
Sydney11:27 → 10:4711:3548 min11:350 min20 Aug
Suva13:22 → 12:4211:410 min11:4148 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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