Ruling · Rudra Vrata · 2099

Tuesday 15 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 511 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 Monday 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 Tuesday 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 00:53 on Tue 15 Sep to 21:08 on Tue 15 Sep.

    2099-09-14T16:52:44Z → 2099-09-15T13:08:06Z

  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 30638 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 2099: Tuesday 15 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 2099 falls on Tuesday 15 September. Pratipadā runs from 00:53 on Tue 15 Sep to 21:08 on Tue 15 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2099/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 15 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 15 Sep
compat-drikpanchangComparison profileTue 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 Angeles09:53 → 06:0812:2448 min12:240 min14 Sep
Chicago11:53 → 08:0812:2248 min12:220 min14 Sep
Jersey City12:53 → 09:0812:2823 min12:270 min14 Sep
Port of Spain12:53 → 09:0811:380 min11:370 min15 Sep
London17:53 → 14:0812:320 min12:3248 min15 Sep
Durban18:53 → 15:0811:280 min11:2848 min15 Sep
Dubai20:53 → 17:0811:510 min11:5048 min15 Sep
Delhi22:23 → 18:3811:530 min11:5248 min15 Sep
Kolkata22:23 → 18:3811:080 min11:0848 min15 Sep
Singapore00:53 → 21:0812:370 min12:3648 min15 Sep
Sydney02:53 → 23:0811:270 min11:2748 min15 Sep
Suva04:53 → 01:0811:380 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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