Ruling · Vāmana Jayantī · 1949

Sunday 4 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 34 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 Saturday 3 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
Dvādaśī begins 13:15:45
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Sunday 4 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 13:16 on Sat 3 Sep to 13:47 on Sun 4 Sep.

    1949-09-03T05:15:46Z → 1949-09-04T05:46:55Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 3rd, 11:53–12:41 on the 4th.

    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 3rd and 48 of 48 on the 4th.

    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 2068 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1949: Sunday 4 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1949 falls on Sunday 4 September. Dvādaśī runs from 13:16 on Sat 3 Sep to 13:47 on Sun 4 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1949/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 4 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 4 Sep
compat-drikpanchangComparison profileSun 4 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 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles21:16 → 21:4711:2848 min11:280 min3 Sep
Chicago00:16 → 00:4712:2648 min12:250 min3 Sep
Jersey City01:16 → 01:4712:3148 min12:310 min3 Sep
Port of Spain01:16 → 01:4711:4148 min11:410 min3 Sep
London06:16 → 06:4712:3548 min12:350 min3 Sep
Durban07:16 → 07:4711:3148 min11:310 min3 Sep
Dubai09:16 → 09:4711:5448 min11:540 min3 Sep
Delhi10:46 → 11:1711:5648 min11:560 min3 Sep
Kolkata10:46 → 11:1711:1248 min11:125 min3 Sep
Singapore12:46 → 13:1712:1012 min12:1048 min4 Sep
Sydney15:16 → 15:4711:310 min11:3148 min4 Sep
Suva17:16 → 17:4711:420 min11:4248 min4 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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