Ruling · Rudra Vrata · 2012

Sunday 16 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 98 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 Sunday 16 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Midday of Monday 17 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

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 10:11 on Sun 16 Sep to 07:48 on Mon 17 Sep.

    2012-09-16T02:10:38Z → 2012-09-16T23:47:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 16th, 11:48–12:36 on the 17th.

    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 16th and 0 of 48 on the 17th.

    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 5880 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2012: Sunday 16 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2012 falls on Sunday 16 September. Pratipadā runs from 10:11 on Sun 16 Sep to 07:48 on Mon 17 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2012/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 16 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 16 Sep
compat-drikpanchangComparison profileSun 16 Sep
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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles19:11 → 16:4812:2348 min12:230 min16 Sep
Chicago21:11 → 18:4812:2148 min12:200 min16 Sep
Jersey City22:11 → 19:4812:2748 min12:260 min16 Sep
Port of Spain22:11 → 19:4811:3748 min11:360 min16 Sep
London03:11 → 00:4812:3148 min12:300 min16 Sep
Durban04:11 → 01:4811:2748 min11:260 min16 Sep
Dubai06:11 → 03:4811:4948 min11:490 min16 Sep
Delhi07:41 → 05:1811:5248 min11:510 min16 Sep
Kolkata07:41 → 05:1811:0748 min11:070 min16 Sep
Singapore10:11 → 07:4812:3548 min12:350 min16 Sep
Sydney12:11 → 09:4811:264 min11:260 min16 Sep
Suva14:11 → 11:4811:370 min11:3711 min17 Sep
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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