Ruling · Rudra Vrata · 2017

Tuesday 22 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 567 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 Tuesday 22 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 Wednesday 23 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 02:30 on Tue 22 Aug to 00:46 on Wed 23 Aug.

    2017-08-21T18:30:10Z → 2017-08-22T16:45:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 22nd, 11:56–12:44 on the 23rd.

    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 22nd and 0 of 48 on the 23rd.

    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 33994 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2017: Tuesday 22 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2017 falls on Tuesday 22 August. Pratipadā runs from 02:30 on Tue 22 Aug to 00:46 on Wed 23 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2017/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 22 Aug
Ahargaṇa, classicalDisc centre, no refractionTue 22 Aug
compat-drikpanchangComparison profileTue 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles11:30 → 09:4612:3248 min12:310 min21 Aug
Chicago13:30 → 11:4612:290 min12:290 min22 Aug
Jersey City14:30 → 12:4612:350 min12:3511 min22 Aug
Port of Spain14:30 → 12:4611:450 min11:4548 min22 Aug
London19:30 → 17:4612:390 min12:3948 min22 Aug
Durban20:30 → 18:4611:350 min11:3548 min22 Aug
Dubai22:30 → 20:4611:580 min11:5748 min22 Aug
Delhi00:00 → 22:1612:000 min12:0048 min22 Aug
Kolkata00:00 → 22:1611:160 min11:1548 min22 Aug
Singapore02:30 → 00:4612:440 min12:4348 min22 Aug
Sydney04:30 → 02:4611:350 min11:3448 min22 Aug
Suva06:30 → 04:4611:460 min11:4548 min22 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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