Ruling · Vāmana Jayantī · 1973

Sunday 9 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 434 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 8 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Sunday 9 September

Taken. The only midday Dvādaśī reaches.

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

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 19:54 on Sat 8 Sep to 21:38 on Sun 9 Sep.

    1973-09-08T11:54:00Z → 1973-09-09T13:38:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 8th, 11:51–12:39 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 26063 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1973: Sunday 9 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1973 falls on Sunday 9 September. Dvādaśī runs from 19:54 on Sat 8 Sep to 21:38 on Sun 9 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 9 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 9 Sep
compat-drikpanchangComparison profileSun 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles04:54 → 06:3812:2648 min12:260 min8 Sep
Chicago06:54 → 08:3812:2448 min12:230 min8 Sep
Jersey City07:54 → 09:3812:3048 min12:290 min8 Sep
Port of Spain07:54 → 09:3811:4048 min11:390 min8 Sep
London12:54 → 14:3812:3428 min12:3348 min9 Sep
Durban13:54 → 15:3811:300 min11:2948 min9 Sep
Dubai15:54 → 17:3811:520 min11:5248 min9 Sep
Delhi17:24 → 19:0811:550 min11:5448 min9 Sep
Kolkata17:24 → 19:0811:100 min11:1048 min9 Sep
Singapore19:24 → 21:0812:080 min12:0848 min9 Sep
Sydney21:54 → 23:3811:290 min11:2948 min9 Sep
Suva23:54 → 01:3811:400 min11:4048 min9 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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