Ruling · Vāmana Jayantī · 1959

Sunday 13 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 13 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
Dvādaśī begins 11:31:14
11:0211:2611:5012:1412:3813:0213:26

48 of 48 minutes covered

Midday of Monday 14 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

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 11:31 on Sun 13 Sep to 10:14 on Mon 14 Sep.

    1959-09-13T03:31:15Z → 1959-09-14T02:14:15Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 13th, 11:50–12:38 on the 14th.

    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 13th and 0 of 48 on the 14th.

    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 1129 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1959: Sunday 13 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1959 falls on Sunday 13 September. Dvādaśī runs from 11:31 on Sun 13 Sep to 10:14 on Mon 14 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1959/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 13 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 13 Sep
compat-drikpanchangComparison profileSun 13 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles20:31 → 19:1412:2548 min12:240 min13 Sep
Chicago22:31 → 21:1412:2248 min12:220 min13 Sep
Jersey City23:31 → 22:1412:2848 min12:280 min13 Sep
Port of Spain23:31 → 22:1411:3848 min11:380 min13 Sep
London04:31 → 03:1412:3248 min12:320 min13 Sep
Durban05:31 → 04:1411:2848 min11:280 min13 Sep
Dubai07:31 → 06:1411:5148 min11:500 min13 Sep
Delhi09:01 → 07:4411:5348 min11:530 min13 Sep
Kolkata09:01 → 07:4411:0948 min11:080 min13 Sep
Singapore11:01 → 09:4412:0748 min12:060 min13 Sep
Sydney13:31 → 12:1411:280 min11:2747 min14 Sep
Suva15:31 → 14:1411:390 min11:3848 min14 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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