Ruling · Rudra Vrata · 1905

Thursday 31 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 331 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 30 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Thursday 31 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 21:13 on Wed 30 Aug to 18:13 on Thu 31 Aug.

    1905-08-30T13:13:14Z → 1905-08-31T10:13:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 30th, 11:54–12:42 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 19850 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1905: Thursday 31 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1905 falls on Thursday 31 August. Pratipadā runs from 21:13 on Wed 30 Aug to 18:13 on Thu 31 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1905/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 31 Aug
compat-drikpanchangComparison profileThu 31 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles05:13 → 02:1311:2948 min11:290 min30 Aug
Chicago07:13 → 04:1311:2748 min11:270 min30 Aug
Jersey City08:13 → 05:1311:3348 min11:320 min30 Aug
Port of Spain09:13 → 06:1311:4348 min11:420 min30 Aug
London13:13 → 10:1311:370 min11:360 min31 Aug
Durban15:13 → 12:1311:330 min11:3241 min31 Aug
Dubai16:54 → 13:5411:360 min11:3648 min31 Aug
Delhi18:34 → 15:3411:490 min11:4848 min31 Aug
Kolkata18:34 → 15:3411:040 min11:0448 min31 Aug
Singapore20:13 → 17:1311:410 min11:4148 min31 Aug
Sydney23:13 → 20:1311:320 min11:3248 min31 Aug
Suva01:08 → 22:0811:380 min11:3848 min31 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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