Ruling · Rudra Vrata · 2042

Monday 15 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 253 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 Sunday 14 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Monday 15 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 16:50 on Sun 14 Sep to 19:08 on Mon 15 Sep.

    2042-09-14T08:50:15Z → 2042-09-15T11:08:11Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 14th, 11:49–12:37 on the 15th.

    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 14th and 48 of 48 on the 15th.

    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 15165 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2042: Monday 15 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2042 falls on Monday 15 September. Pratipadā runs from 16:50 on Sun 14 Sep to 19:08 on Mon 15 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2042/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 15 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 15 Sep
compat-drikpanchangComparison profileMon 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles01:50 → 04:0812:2448 min12:240 min14 Sep
Chicago03:50 → 06:0812:2248 min12:210 min14 Sep
Jersey City04:50 → 07:0812:2748 min12:270 min14 Sep
Port of Spain04:50 → 07:0811:3848 min11:370 min14 Sep
London09:50 → 12:0812:3248 min12:310 min14 Sep
Durban10:50 → 13:0811:2848 min11:2748 min14 Sep
Dubai12:50 → 15:0811:500 min11:5048 min15 Sep
Delhi14:20 → 16:3811:520 min11:5248 min15 Sep
Kolkata14:20 → 16:3811:080 min11:0848 min15 Sep
Singapore16:50 → 19:0812:360 min12:3648 min15 Sep
Sydney18:50 → 21:0811:270 min11:2748 min15 Sep
Suva20:50 → 23:0811:380 min11:3848 min15 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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