Ruling · Vāmana Jayantī · 1934

Thursday 20 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 528 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 Wednesday 19 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

0 of 48 minutes covered

Midday of Thursday 20 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

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 00:21 on Thu 20 Sep to 21:24 on Thu 20 Sep.

    1934-09-19T16:21:08Z → 1934-09-20T13:23:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:48–12:36 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 31678 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1934: Thursday 20 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1934 falls on Thursday 20 September. Dvādaśī runs from 00:21 on Thu 20 Sep to 21:24 on Thu 20 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1934/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 20 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 20 Sep
compat-drikpanchangComparison profileThu 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles08:21 → 05:2411:2348 min11:220 min19 Sep
Chicago11:21 → 08:2412:2048 min12:200 min19 Sep
Jersey City12:21 → 09:2412:2648 min12:260 min19 Sep
Port of Spain12:21 → 09:2411:363 min11:360 min19 Sep
London17:21 → 14:2412:300 min12:3048 min20 Sep
Durban18:21 → 15:2411:260 min11:2648 min20 Sep
Dubai20:21 → 17:2411:490 min11:4848 min20 Sep
Delhi21:51 → 18:5411:510 min11:5148 min20 Sep
Kolkata21:51 → 18:5411:060 min11:0648 min20 Sep
Singapore23:41 → 20:4411:550 min11:5448 min20 Sep
Sydney02:21 → 23:2411:260 min11:2548 min20 Sep
Suva04:21 → 01:2411:370 min11:3648 min20 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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