Ruling · Rudra Vrata · 1981

Sunday 30 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 595 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 Saturday 29 August

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Sunday 30 August

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 22:43 on Sat 29 Aug to 22:37 on Sun 30 Aug.

    1981-08-29T14:43:25Z → 1981-08-30T14:37:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 29th, 11:54–12:42 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 35680 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1981: Sunday 30 August.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1981 falls on Sunday 30 August. Pratipadā runs from 22:43 on Sat 29 Aug to 22:37 on Sun 30 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1981/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 30 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 30 Aug
compat-drikpanchangComparison profileSun 30 Aug
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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles07:43 → 07:3712:2948 min12:290 min29 Aug
Chicago09:43 → 09:3712:2748 min12:270 min29 Aug
Jersey City10:43 → 10:3712:3348 min12:320 min29 Aug
Port of Spain10:43 → 10:3711:4348 min11:430 min29 Aug
London15:43 → 15:3712:370 min12:3748 min30 Aug
Durban16:43 → 16:3711:330 min11:3348 min30 Aug
Dubai18:43 → 18:3711:560 min11:5548 min30 Aug
Delhi20:13 → 20:0711:580 min11:5848 min30 Aug
Kolkata20:13 → 20:0711:130 min11:1348 min30 Aug
Singapore22:13 → 22:0712:120 min12:1148 min30 Aug
Sydney00:43 → 00:3711:320 min11:3248 min30 Aug
Suva02:43 → 02:3711:430 min11:4348 min30 Aug
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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