Ruling · Rudra Vrata · 1948

Saturday 4 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 171 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 Friday 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

Midday of Saturday 4 September

Taken. The only midday Pratipadā reaches.

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

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 20:21 on Fri 3 Sep to 16:32 on Sat 4 Sep.

    1948-09-03T11:21:11Z → 1948-09-04T07:31:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:53–13:41 on the 3rd, 12:53–13:41 on the 4th.

    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 3rd and 48 of 48 on the 4th.

    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 10256 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1948: Saturday 4 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1948 falls on Saturday 4 September. Pratipadā runs from 20:21 on Fri 3 Sep to 16:32 on Sat 4 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1948/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 4 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 4 Sep
compat-drikpanchangComparison profileSat 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles04:21 → 00:3212:2848 min12:280 min3 Sep
Chicago06:21 → 02:3212:2548 min12:250 min3 Sep
Jersey City07:21 → 03:3212:3148 min12:310 min3 Sep
Port of Spain07:21 → 03:3211:4148 min11:410 min3 Sep
London12:21 → 08:3212:3548 min12:350 min3 Sep
Durban13:21 → 09:3211:310 min11:310 min4 Sep
Dubai15:21 → 11:3211:540 min11:540 min4 Sep
Delhi16:51 → 13:0211:560 min11:5648 min4 Sep
Kolkata16:51 → 13:0211:120 min11:1148 min4 Sep
Singapore18:51 → 15:0212:100 min12:1048 min4 Sep
Sydney21:21 → 17:3211:310 min11:3148 min4 Sep
Suva23:21 → 19:3211:420 min11:4248 min4 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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