Ruling · Rudra Vrata · 1940

Monday 2 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 22 minutes.

Decide it for

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 Monday 2 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 12:54  13:42 madhyāhna ends
Pratipadā begins 13:15:03
12:0612:3012:5413:1813:4214:0614:30

26 of 48 minutes covered, the last 26

Midday of Tuesday 3 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 12:53  13:41 madhyāhna ends
12:0512:2912:5313:1713:4114:0514:29

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 13:15 on Mon 2 Sep to 09:43 on Tue 3 Sep.

    1940-09-02T04:15:03Z → 1940-09-03T00:43:13Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:54–13:42 on the 2nd, 12:53–13:41 on the 3rd.

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

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 26 of 48 minutes on the 2nd and 0 of 48 on the 3rd.

    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 1290 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1940: Monday 2 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1940 falls on Monday 2 September. Pratipadā runs from 13:15 on Mon 2 Sep to 09:43 on Tue 3 Sep and covers 26 of 48 minutes of madhyāhna that midday.

ahargana.org/baoding/festivals/1940/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 2 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 2 Sep
compat-drikpanchangComparison profileMon 2 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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles20:15 → 16:4311:2848 min11:280 min2 Sep
Chicago23:15 → 19:4312:2648 min12:250 min2 Sep
Jersey City00:15 → 20:4312:3248 min12:310 min2 Sep
Port of Spain00:15 → 20:4311:4248 min11:410 min2 Sep
London05:15 → 01:4312:3648 min12:350 min2 Sep
Durban06:15 → 02:4311:3248 min11:310 min2 Sep
Dubai08:15 → 04:4311:5448 min11:540 min2 Sep
Delhi09:45 → 06:1311:5748 min11:560 min2 Sep
Kolkata09:45 → 06:1311:1248 min11:120 min2 Sep
Singapore11:35 → 08:0312:0048 min12:000 min2 Sep
Sydney14:15 → 10:4311:310 min11:310 min3 Sep
Suva16:15 → 12:4311:420 min11:4248 min3 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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