Ruling · Vāmana Jayantī · 1920

Friday 24 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 122 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 Friday 24 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

48 of 48 minutes covered

Midday of Saturday 25 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 08:30 on Fri 24 Sep to 09:43 on Sat 25 Sep.

    1920-09-24T00:30:25Z → 1920-09-25T01:43:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 24th, 11:46–12:34 on the 25th.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.

    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: unstated → only-day · margin 7342 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1920: Friday 24 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1920 falls on Friday 24 September. Dvādaśī runs from 08:30 on Fri 24 Sep to 09:43 on Sat 25 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1920/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 24 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 24 Sep
compat-drikpanchangComparison profileFri 24 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/vamana-jayanti · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Dvādaśī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvādaśīMadhyāhna 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles16:30 → 17:4311:2148 min11:200 min24 Sep
Chicago19:30 → 20:4312:1848 min12:180 min24 Sep
Jersey City20:30 → 21:4312:2448 min12:240 min24 Sep
Port of Spain20:30 → 21:4311:3448 min11:340 min24 Sep
London01:30 → 02:4312:2848 min12:280 min24 Sep
Durban02:30 → 03:4311:2448 min11:240 min24 Sep
Dubai04:30 → 05:4311:4748 min11:460 min24 Sep
Delhi06:00 → 07:1311:4948 min11:490 min24 Sep
Kolkata06:00 → 07:1311:0548 min11:040 min24 Sep
Singapore07:30 → 08:4311:3348 min11:320 min24 Sep
Sydney10:30 → 11:4311:2448 min11:2320 min24 Sep
Suva12:30 → 13:4311:350 min11:3448 min25 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vamana-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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