Ruling · Rudra Vrata · 1969

Friday 12 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 435 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 Friday 12 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

48 of 48 minutes covered

Midday of Saturday 13 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

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 03:56 on Fri 12 Sep to 04:35 on Sat 13 Sep.

    1969-09-11T19:55:47Z → 1969-09-12T20:34:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 12th, 11:50–12:38 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 26103 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1969: Friday 12 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1969 falls on Friday 12 September. Pratipadā runs from 03:56 on Fri 12 Sep to 04:35 on Sat 13 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1969/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 12 Sep
compat-drikpanchangComparison profileFri 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles12:56 → 13:3512:2517 min12:2548 min11 Sep
Chicago14:56 → 15:3512:230 min12:2248 min12 Sep
Jersey City15:56 → 16:3512:290 min12:2848 min12 Sep
Port of Spain15:56 → 16:3511:390 min11:3848 min12 Sep
London20:56 → 21:3512:330 min12:3248 min12 Sep
Durban21:56 → 22:3511:290 min11:2848 min12 Sep
Dubai23:56 → 00:3511:510 min11:5148 min12 Sep
Delhi01:26 → 02:0511:540 min11:5348 min12 Sep
Kolkata01:26 → 02:0511:090 min11:0948 min12 Sep
Singapore03:26 → 04:0512:070 min12:0748 min12 Sep
Sydney05:56 → 06:3511:280 min11:2848 min12 Sep
Suva07:56 → 08:3511:390 min11:3948 min12 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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