Ruling · Vāmana Jayantī · 1931

Wednesday 23 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 366 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 Tuesday 22 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

0 of 48 minutes covered

Midday of Wednesday 23 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

48 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 18:41 on Tue 22 Sep to 20:31 on Wed 23 Sep.

    1931-09-22T10:41:08Z → 1931-09-23T12:30:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 22nd, 11:47–12:35 on the 23rd.

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

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.

    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 21970 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1931: Wednesday 23 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1931 falls on Wednesday 23 September. Dvādaśī runs from 18:41 on Tue 22 Sep to 20:31 on Wed 23 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1931/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 23 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 23 Sep
compat-drikpanchangComparison profileWed 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles02:41 → 04:3111:2248 min11:210 min22 Sep
Chicago05:41 → 07:3112:1948 min12:190 min22 Sep
Jersey City06:41 → 08:3112:2548 min12:250 min22 Sep
Port of Spain06:41 → 08:3111:3548 min11:350 min22 Sep
London11:41 → 13:3112:2948 min12:2948 min22 Sep
Durban12:41 → 14:3111:250 min11:2548 min23 Sep
Dubai14:41 → 16:3111:480 min11:4748 min23 Sep
Delhi16:11 → 18:0111:500 min11:5048 min23 Sep
Kolkata16:11 → 18:0111:050 min11:0548 min23 Sep
Singapore17:41 → 19:3111:340 min11:3348 min23 Sep
Sydney20:41 → 22:3111:250 min11:2448 min23 Sep
Suva22:41 → 00:3111:360 min11:3548 min23 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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