Ruling · Vāmana Jayantī · 1966

Monday 26 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 157 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 25 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

Midday of Monday 26 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:45  12:33 madhyāhna ends
10:5711:2111:4512:0912:3312:5713:21

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 15:11 on Sun 25 Sep to 17:27 on Mon 26 Sep.

    1966-09-25T07:10:59Z → 1966-09-26T09:26:43Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 25th, 11:45–12:33 on the 26th.

    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 25th and 48 of 48 on the 26th.

    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 9433 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1966: Monday 26 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1966 falls on Monday 26 September. Dvādaśī runs from 15:11 on Sun 25 Sep to 17:27 on Mon 26 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1966/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 26 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 26 Sep
compat-drikpanchangComparison profileMon 26 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles00:11 → 02:2712:2048 min12:200 min25 Sep
Chicago02:11 → 04:2712:1848 min12:180 min25 Sep
Jersey City03:11 → 05:2712:2448 min12:230 min25 Sep
Port of Spain03:11 → 05:2711:3448 min11:330 min25 Sep
London08:11 → 10:2712:2848 min12:270 min25 Sep
Durban09:11 → 11:2711:2448 min11:243 min25 Sep
Dubai11:11 → 13:2711:4648 min11:4648 min25 Sep
Delhi12:41 → 14:5711:490 min11:4848 min26 Sep
Kolkata12:41 → 14:5711:040 min11:0448 min26 Sep
Singapore14:41 → 16:5712:020 min12:0248 min26 Sep
Sydney17:11 → 19:2711:230 min11:2348 min26 Sep
Suva19:11 → 21:2711:340 min11:3448 min26 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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