Ruling · Rudra Vrata · 1964

Sunday 6 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 6 min 15 s.

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 6 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
Pratipadā begins 12:33:57
11:0411:2811:5212:1612:4013:0413:28

6 of 48 minutes covered, the last 6

Midday of Monday 7 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
Pratipadā ends 11:08:54
11:0411:2811:5212:1612:4013:0413:28

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 12:34 on Sun 6 Sep to 11:09 on Mon 7 Sep.

    1964-09-06T04:33:57Z → 1964-09-07T03:08:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 6th, 11:52–12:40 on the 7th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 6 of 48 minutes on the 6th and 0 of 48 on the 7th.

    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 375 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1964: Sunday 6 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1964 falls on Sunday 6 September. Pratipadā runs from 12:34 on Sun 6 Sep to 11:09 on Mon 7 Sep and covers 6 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1964/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 6 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 6 Sep
compat-drikpanchangComparison profileSun 6 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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles21:34 → 20:0912:2748 min12:270 min6 Sep
Chicago23:34 → 22:0912:2448 min12:240 min6 Sep
Jersey City00:34 → 23:0912:3048 min12:300 min6 Sep
Port of Spain00:34 → 23:0911:4048 min11:400 min6 Sep
London05:34 → 04:0912:3448 min12:340 min6 Sep
Durban06:34 → 05:0911:3048 min11:300 min6 Sep
Dubai08:34 → 07:0911:5348 min11:530 min6 Sep
Delhi10:04 → 08:3911:5548 min11:550 min6 Sep
Kolkata10:04 → 08:3911:1148 min11:100 min6 Sep
Singapore12:04 → 10:3912:0948 min12:090 min6 Sep
Sydney14:34 → 13:0911:300 min11:3048 min7 Sep
Suva16:34 → 15:0911:410 min11:4148 min7 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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