Ruling · Vāmana Jayantī · 1929

Sunday 15 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 412 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 15 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Midday of Monday 16 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 03:11 on Sun 15 Sep to 04:57 on Mon 16 Sep.

    1929-09-14T19:11:27Z → 1929-09-15T20:57:20Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 24694 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1929: Sunday 15 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1929 falls on Sunday 15 September. Dvādaśī runs from 03:11 on Sun 15 Sep to 04:57 on Mon 16 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1929/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 15 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 15 Sep
compat-drikpanchangComparison profileSun 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles11:11 → 12:5711:2448 min11:2448 min14 Sep
Chicago14:11 → 15:5712:220 min12:2148 min15 Sep
Jersey City15:11 → 16:5712:280 min12:2748 min15 Sep
Port of Spain15:11 → 16:5711:380 min11:3748 min15 Sep
London20:11 → 21:5712:320 min12:3148 min15 Sep
Durban21:11 → 22:5711:280 min11:2748 min15 Sep
Dubai23:11 → 00:5711:500 min11:5048 min15 Sep
Delhi00:41 → 02:2711:530 min11:5248 min15 Sep
Kolkata00:41 → 02:2711:080 min11:0848 min15 Sep
Singapore02:11 → 03:5711:360 min11:3648 min15 Sep
Sydney05:11 → 06:5711:270 min11:2748 min15 Sep
Suva07:11 → 08:5711:380 min11:3848 min15 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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