Ruling · Vāmana Jayantī · 1954

Thursday 9 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 5 min 17 s.

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 Thursday 9 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
Dvādaśī begins 11:46:06
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

Midday of Friday 10 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 11:46 on Thu 9 Sep to 10:57 on Fri 10 Sep.

    1954-09-09T03:46:07Z → 1954-09-10T02:56:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 9th, 11:51–12:39 on the 10th.

    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 9th and 0 of 48 on the 10th.

    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 317 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1954: Thursday 9 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1954 falls on Thursday 9 September. Dvādaśī runs from 11:46 on Thu 9 Sep to 10:57 on Fri 10 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1954/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 9 Sep
compat-drikpanchangComparison profileThu 9 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles20:46 → 19:5712:2648 min12:260 min9 Sep
Chicago22:46 → 21:5712:2448 min12:230 min9 Sep
Jersey City23:46 → 22:5712:2948 min12:290 min9 Sep
Port of Spain23:46 → 22:5711:3948 min11:390 min9 Sep
London04:46 → 03:5712:3348 min12:330 min9 Sep
Durban05:46 → 04:5711:3048 min11:290 min9 Sep
Dubai07:46 → 06:5711:5248 min11:520 min9 Sep
Delhi09:16 → 08:2711:5448 min11:540 min9 Sep
Kolkata09:16 → 08:2711:1048 min11:100 min9 Sep
Singapore11:16 → 10:2712:0848 min12:080 min9 Sep
Sydney13:46 → 12:5711:290 min11:2948 min10 Sep
Suva15:46 → 14:5711:400 min11:4048 min10 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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