Ruling · Rudra Vrata · 1945

Friday 7 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 543 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 Thursday 6 September

Pratipadā is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Friday 7 September

Taken. The only midday Pratipadā reaches.

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

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 21:44 on Thu 6 Sep to 23:09 on Fri 7 Sep.

    1945-09-06T13:43:31Z → 1945-09-07T15:08:32Z

  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 0 of 48 minutes on the 6th and 48 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 32591 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1945: Friday 7 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1945 falls on Friday 7 September. Pratipadā runs from 21:44 on Thu 6 Sep to 23:09 on Fri 7 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1945/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 7 Sep
compat-drikpanchangComparison profileFri 7 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 Angeles06:44 → 08:0912:2748 min12:270 min6 Sep
Chicago08:44 → 10:0912:2548 min12:240 min6 Sep
Jersey City09:44 → 11:0912:3048 min12:300 min6 Sep
Port of Spain10:44 → 12:0912:4048 min12:400 min6 Sep
London14:44 → 16:0912:340 min12:3448 min7 Sep
Durban15:44 → 17:0911:310 min11:3048 min7 Sep
Dubai17:44 → 19:0911:530 min11:5348 min7 Sep
Delhi20:14 → 21:3912:550 min12:5548 min7 Sep
Kolkata20:14 → 21:3912:110 min12:1148 min7 Sep
Singapore22:44 → 00:0913:390 min13:3948 min7 Sep
Sydney23:44 → 01:0911:300 min11:3048 min7 Sep
Suva01:44 → 03:0911:410 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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