Ruling · Rudra Vrata · 2005

Sunday 4 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 425 minutes.

Decide it for

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 4 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

48 of 48 minutes covered

Midday of Monday 5 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 02:45 on Sun 4 Sep to 04:47 on Mon 5 Sep.

    2005-09-03T18:45:26Z → 2005-09-04T20:47:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 4th, 11:53–12:41 on the 5th.

    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 4th and 0 of 48 on the 5th.

    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 25519 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2005: Sunday 4 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2005 falls on Sunday 4 September. Pratipadā runs from 02:45 on Sun 4 Sep to 04:47 on Mon 5 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2005/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 4 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 4 Sep
compat-drikpanchangComparison profileSun 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles11:45 → 13:4712:2848 min12:2848 min3 Sep
Chicago13:45 → 15:4712:250 min12:2548 min4 Sep
Jersey City14:45 → 16:4712:310 min12:3148 min4 Sep
Port of Spain14:45 → 16:4711:410 min11:4148 min4 Sep
London19:45 → 21:4712:350 min12:3548 min4 Sep
Durban20:45 → 22:4711:310 min11:3148 min4 Sep
Dubai22:45 → 00:4711:540 min11:5448 min4 Sep
Delhi00:15 → 02:1711:560 min11:5648 min4 Sep
Kolkata00:15 → 02:1711:120 min11:1148 min4 Sep
Singapore02:45 → 04:4712:400 min12:4048 min4 Sep
Sydney04:45 → 06:4711:310 min11:3148 min4 Sep
Suva06:45 → 08:4711:420 min11:4248 min4 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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