Ruling · Vāmana Jayantī · 1909

Sunday 26 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 55 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 26 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:45  12:33 madhyāhna ends
10:5711:2111:4512:0912:3312:5713:21

48 of 48 minutes covered

Midday of Monday 27 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:45  12:33 madhyāhna ends
10:5711:2111:4512:0912:3312:5713:21

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 10:50 on Sun 26 Sep to 08:03 on Mon 27 Sep.

    1909-09-26T02:50:29Z → 1909-09-27T00:03:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 26th, 11:45–12:33 on the 27th.

    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 26th and 0 of 48 on the 27th.

    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 3297 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1909: Sunday 26 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1909 falls on Sunday 26 September. Dvādaśī runs from 10:50 on Sun 26 Sep to 08:03 on Mon 27 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1909/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 26 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 26 Sep
compat-drikpanchangComparison profileSun 26 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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles18:50 → 16:0311:2048 min11:200 min26 Sep
Chicago20:50 → 18:0311:1848 min11:170 min26 Sep
Jersey City21:50 → 19:0311:2348 min11:230 min26 Sep
Port of Spain22:50 → 20:0311:3348 min11:330 min26 Sep
London02:50 → 00:0311:2848 min11:270 min26 Sep
Durban04:50 → 02:0311:2448 min11:230 min26 Sep
Dubai06:31 → 03:4411:2748 min11:270 min26 Sep
Delhi08:20 → 05:3311:4848 min11:480 min26 Sep
Kolkata08:20 → 05:3311:0448 min11:040 min26 Sep
Singapore09:50 → 07:0311:3248 min11:320 min26 Sep
Sydney12:50 → 10:0311:230 min11:230 min27 Sep
Suva14:45 → 11:5811:290 min11:2930 min27 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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