Ruling · Vāmana Jayantī · 2064

Monday 22 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 68 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 21 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

0 of 48 minutes covered

Midday of Monday 22 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

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 13:42 on Sun 21 Sep to 15:14 on Mon 22 Sep.

    2064-09-21T05:42:25Z → 2064-09-22T07:13:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 21st, 11:47–12:35 on the 22nd.

    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 21st and 48 of 48 on the 22nd.

    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 4053 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2064: Monday 22 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2064 falls on Monday 22 September. Dvādaśī runs from 13:42 on Sun 21 Sep to 15:14 on Mon 22 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2064/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 22 Sep
compat-drikpanchangComparison profileMon 22 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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles22:42 → 00:1412:2248 min12:210 min21 Sep
Chicago00:42 → 02:1412:1948 min12:190 min21 Sep
Jersey City01:42 → 03:1412:2548 min12:240 min21 Sep
Port of Spain01:42 → 03:1411:3548 min11:350 min21 Sep
London06:42 → 08:1412:2948 min12:290 min21 Sep
Durban07:42 → 09:1411:2548 min11:250 min21 Sep
Dubai09:42 → 11:1411:4848 min11:470 min21 Sep
Delhi11:12 → 12:4411:5048 min11:5048 min21 Sep
Kolkata11:12 → 12:4411:0541 min11:0548 min22 Sep
Singapore13:42 → 15:1412:340 min12:3348 min22 Sep
Sydney15:42 → 17:1411:250 min11:2448 min22 Sep
Suva17:42 → 19:1411:360 min11:3548 min22 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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