Ruling · Rudra Vrata · 1917

Saturday 18 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 427 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 Saturday 18 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

48 of 48 minutes covered

Midday of Sunday 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

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

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 02:21 on Sat 18 Aug to 04:50 on Sun 19 Aug.

    1917-08-17T18:20:33Z → 1917-08-18T20:50:03Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 18th, 11:57–12:45 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 25646 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1917: Saturday 18 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1917 falls on Saturday 18 August. Pratipadā runs from 02:21 on Sat 18 Aug to 04:50 on Sun 19 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1917/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 18 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 18 Aug
compat-drikpanchangComparison profileSat 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles10:21 → 12:5011:3348 min11:3248 min17 Aug
Chicago12:21 → 14:5011:300 min11:3048 min18 Aug
Jersey City13:21 → 15:5011:360 min11:3648 min18 Aug
Port of Spain14:21 → 16:5011:460 min11:4648 min18 Aug
London19:21 → 21:5012:400 min12:4048 min18 Aug
Durban20:21 → 22:5011:360 min11:3648 min18 Aug
Dubai22:02 → 00:3111:400 min11:3948 min18 Aug
Delhi23:51 → 02:2012:010 min12:0148 min18 Aug
Kolkata23:51 → 02:2011:160 min11:1648 min18 Aug
Singapore01:21 → 03:5011:450 min11:4448 min18 Aug
Sydney04:21 → 06:5011:350 min11:3548 min18 Aug
Suva06:21 → 08:5011:470 min11:4648 min18 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

About Ahargaṇa