Ruling · Vāmana Jayantī · 1923

Friday 21 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 373 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 21 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

Midday of Saturday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 05:14 on Fri 21 Sep to 05:34 on Sat 22 Sep.

    1923-09-20T21:13:46Z → 1923-09-21T21:34:19Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 21st, 11:47–12:35 on the 22nd.

    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 21st and 0 of 48 on the 22nd.

    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 22358 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1923: Friday 21 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1923 falls on Friday 21 September. Dvādaśī runs from 05:14 on Fri 21 Sep to 05:34 on Sat 22 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1923/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 21 Sep
compat-drikpanchangComparison profileFri 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles13:14 → 13:3411:220 min11:2248 min21 Sep
Chicago16:14 → 16:3412:200 min12:2048 min21 Sep
Jersey City17:14 → 17:3412:260 min12:2548 min21 Sep
Port of Spain17:14 → 17:3411:360 min11:3548 min21 Sep
London21:14 → 21:3411:300 min11:2948 min21 Sep
Durban23:14 → 23:3411:260 min11:2648 min21 Sep
Dubai01:14 → 01:3411:480 min11:4848 min21 Sep
Delhi02:44 → 03:0411:510 min11:5048 min21 Sep
Kolkata02:44 → 03:0411:060 min11:0648 min21 Sep
Singapore04:14 → 04:3411:340 min11:3448 min21 Sep
Sydney07:14 → 07:3411:250 min11:2548 min21 Sep
Suva09:14 → 09:3411:360 min11:3648 min21 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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