Ruling · Rudra Vrata · 1918

Friday 6 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 363 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 Thursday 5 September

Pratipadā is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Friday 6 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

Pratipadā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 18:43 on Thu 5 Sep to 20:45 on Fri 6 Sep.

    1918-09-05T10:43:23Z → 1918-09-06T12:45:14Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 5th, 11:52–12:40 on the 6th.

    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 5th and 48 of 48 on the 6th.

    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 21755 s

  5. 05

    Ruling

    Rudra Vrata, Baoding, 1918: Friday 6 September.

    confidence: determinate

Say it like this

In Baoding, Rudra Vrata 1918 falls on Friday 6 September. Pratipadā runs from 18:43 on Thu 5 Sep to 20:45 on Fri 6 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1918/rudra-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 6 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 6 Sep
compat-drikpanchangComparison profileFri 6 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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles03:43 → 05:4512:2748 min12:270 min5 Sep
Chicago05:43 → 07:4512:2548 min12:250 min5 Sep
Jersey City06:43 → 08:4512:3148 min12:300 min5 Sep
Port of Spain06:43 → 08:4511:4148 min11:400 min5 Sep
London11:43 → 13:4512:3548 min12:3548 min5 Sep
Durban12:43 → 14:4511:310 min11:3148 min6 Sep
Dubai14:24 → 16:2611:340 min11:3448 min6 Sep
Delhi16:13 → 18:1511:560 min11:5548 min6 Sep
Kolkata16:13 → 18:1511:110 min11:1148 min6 Sep
Singapore17:43 → 19:4511:400 min11:3948 min6 Sep
Sydney20:43 → 22:4511:300 min11:3048 min6 Sep
Suva22:43 → 00:4511:410 min11:4148 min6 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

About Ahargaṇa