Ruling · Rudra Vrata · 1999

Friday 10 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 349 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 10 September

Taken. The only midday Pratipadā reaches.

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

48 of 48 minutes covered

Midday of Saturday 11 September

Pratipadā is absent from madhyāhna. Not taken.

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

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 06:02 on Fri 10 Sep to 05:47 on Sat 11 Sep.

    1999-09-09T22:02:15Z → 1999-09-10T21:46:35Z

  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 0 of 48 on the 11th.

    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 20927 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1999: Friday 10 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1999 falls on Friday 10 September. Pratipadā runs from 06:02 on Fri 10 Sep to 05:47 on Sat 11 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1999/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 10 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 10 Sep
compat-drikpanchangComparison profileFri 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles15:02 → 14:4712:260 min12:2648 min10 Sep
Chicago17:02 → 16:4712:240 min12:2348 min10 Sep
Jersey City18:02 → 17:4712:290 min12:2948 min10 Sep
Port of Spain18:02 → 17:4711:390 min11:3948 min10 Sep
London23:02 → 22:4712:330 min12:3348 min10 Sep
Durban00:02 → 23:4711:300 min11:2948 min10 Sep
Dubai02:02 → 01:4711:520 min11:5248 min10 Sep
Delhi03:32 → 03:1711:540 min11:5448 min10 Sep
Kolkata03:32 → 03:1711:100 min11:1048 min10 Sep
Singapore06:02 → 05:4712:380 min12:3848 min10 Sep
Sydney08:02 → 07:4711:290 min11:2948 min10 Sep
Suva10:02 → 09:4711:400 min11:4048 min10 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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