Ruling · Vāmana Jayantī · 2010

Sunday 19 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 105 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 Sunday 19 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

Midday of Monday 20 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 07:34 on Sun 19 Sep to 10:03 on Mon 20 Sep.

    2010-09-18T23:34:29Z → 2010-09-20T02:02:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:47–12:35 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 48 of 48 minutes on the 19th and 0 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 6291 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2010: Sunday 19 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2010 falls on Sunday 19 September. Dvādaśī runs from 07:34 on Sun 19 Sep to 10:03 on Mon 20 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 19 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 19 Sep
compat-drikpanchangComparison profileSun 19 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 18thCoveredMadhyāhna 20thCoveredRuled
Los Angeles16:34 → 19:0312:230 min12:220 min19 Sep
Chicago18:34 → 21:0312:200 min12:200 min19 Sep
Jersey City19:34 → 22:0312:260 min12:250 min19 Sep
Port of Spain19:34 → 22:0311:360 min11:350 min19 Sep
London00:34 → 03:0312:300 min12:290 min19 Sep
Durban01:34 → 04:0311:260 min11:260 min19 Sep
Dubai03:34 → 06:0311:490 min11:480 min19 Sep
Delhi05:04 → 07:3311:510 min11:500 min19 Sep
Kolkata05:04 → 07:3311:070 min11:060 min19 Sep
Singapore07:34 → 10:0312:350 min12:340 min19 Sep
Sydney09:34 → 12:0311:260 min11:2538 min19 Sep
Suva11:34 → 14:0311:370 min11:3648 min19 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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