Ruling · Rudra Vrata · 1961

Sunday 10 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 21 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 10 September

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

Midday of Monday 11 September

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
Pratipadā ends 12:59:35
11:0311:2711:5112:1512:3913:0313:27

48 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 10:50 on Sun 10 Sep to 13:00 on Mon 11 Sep.

    1961-09-10T02:49:31Z → 1961-09-11T04:59:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 10th, 11:51–12:39 on the 11th.

    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 10th and 48 of 48 on the 11th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 1260 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1961: Sunday 10 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1961 falls on Sunday 10 September. Pratipadā runs from 10:50 on Sun 10 Sep to 13:00 on Mon 11 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/baoding/festivals/1961/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 10 Sep
compat-drikpanchangComparison profileSun 10 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 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles19:50 → 22:0012:2648 min12:250 min10 Sep
Chicago21:50 → 00:0012:2348 min12:230 min10 Sep
Jersey City22:50 → 01:0012:2948 min12:290 min10 Sep
Port of Spain22:50 → 01:0011:3948 min11:390 min10 Sep
London03:50 → 06:0012:3348 min12:330 min10 Sep
Durban04:50 → 07:0011:2948 min11:290 min10 Sep
Dubai06:50 → 09:0011:5248 min11:510 min10 Sep
Delhi08:20 → 10:3011:5448 min11:540 min10 Sep
Kolkata08:20 → 10:3011:0948 min11:090 min10 Sep
Singapore10:20 → 12:3012:0848 min12:0722 min10 Sep
Sydney12:50 → 15:0011:290 min11:2848 min11 Sep
Suva14:50 → 17:0011:400 min11:3948 min11 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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