Ruling · Rudra Vrata · 1955

Saturday 17 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 65 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 16 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 of 48 minutes covered

Midday of Saturday 17 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 14:19 on Fri 16 Sep to 13:41 on Sat 17 Sep.

    1955-09-16T06:19:13Z → 1955-09-17T05:41:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 16th, 11:49–12:37 on the 17th.

    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 16th and 48 of 48 on the 17th.

    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 3872 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1955: Saturday 17 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1955 falls on Saturday 17 September. Pratipadā runs from 14:19 on Fri 16 Sep to 13:41 on Sat 17 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1955/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 17 Sep
compat-drikpanchangComparison profileSat 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles23:19 → 22:4112:2448 min12:230 min16 Sep
Chicago01:19 → 00:4112:2148 min12:210 min16 Sep
Jersey City02:19 → 01:4112:2748 min12:270 min16 Sep
Port of Spain02:19 → 01:4111:3748 min11:370 min16 Sep
London07:19 → 06:4112:3148 min12:310 min16 Sep
Durban08:19 → 07:4111:2748 min11:270 min16 Sep
Dubai10:19 → 09:4111:5048 min11:490 min16 Sep
Delhi11:49 → 11:1111:5248 min11:520 min16 Sep
Kolkata11:49 → 11:1111:086 min11:074 min16 Sep
Singapore13:49 → 13:1112:060 min12:0548 min17 Sep
Sydney16:19 → 15:4111:270 min11:2648 min17 Sep
Suva18:19 → 17:4111:380 min11:3748 min17 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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