Ruling · Rudra Vrata · 1972

Friday 8 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 585 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 8 September

Taken. The only midday Pratipadā reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

48 of 48 minutes covered

Midday of Saturday 9 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 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 01:28 on Fri 8 Sep to 02:06 on Sat 9 Sep.

    1972-09-07T17:28:25Z → 1972-09-08T18:06:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 8th, 11:51–12:39 on the 9th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.

    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 35108 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1972: Friday 8 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1972 falls on Friday 8 September. Pratipadā runs from 01:28 on Fri 8 Sep to 02:06 on Sat 9 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1972/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 8 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 8 Sep
compat-drikpanchangComparison profileFri 8 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 7thCoveredMadhyāhna 8thCoveredRuled
Los Angeles10:28 → 11:0612:2748 min12:260 min7 Sep
Chicago12:28 → 13:0612:2444 min12:2442 min7 Sep
Jersey City13:28 → 14:0612:300 min12:2948 min8 Sep
Port of Spain13:28 → 14:0611:400 min11:4048 min8 Sep
London18:28 → 19:0612:340 min12:3448 min8 Sep
Durban19:28 → 20:0611:300 min11:3048 min8 Sep
Dubai21:28 → 22:0611:530 min11:5248 min8 Sep
Delhi22:58 → 23:3611:550 min11:5548 min8 Sep
Kolkata22:58 → 23:3611:100 min11:1048 min8 Sep
Singapore00:58 → 01:3612:090 min12:0848 min8 Sep
Sydney03:28 → 04:0611:290 min11:2948 min8 Sep
Suva05:28 → 06:0611:410 min11:4048 min8 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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