Ruling · Vāmana Jayantī · 1969

Tuesday 23 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 31 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 Monday 22 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 Tuesday 23 September

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvādaśī ends 11:15:27
10:5811:2211:4612:1012:3412:5813:22

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 13:53 on Mon 22 Sep to 11:15 on Tue 23 Sep.

    1969-09-22T05:52:48Z → 1969-09-23T03:15:27Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 22nd, 11:46–12:34 on the 23rd.

    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 22nd and 0 of 48 on the 23rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 1853 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1969: Tuesday 23 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1969 falls on Tuesday 23 September. Dvādaśī runs from 13:53 on Mon 22 Sep to 11:15 on Tue 23 Sep, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1969/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 23 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 23 Sep
compat-drikpanchangComparison profileTue 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles22:53 → 20:1512:2148 min12:210 min22 Sep
Chicago00:53 → 22:1512:1948 min12:190 min22 Sep
Jersey City01:53 → 23:1512:2548 min12:240 min22 Sep
Port of Spain01:53 → 23:1511:3548 min11:340 min22 Sep
London06:53 → 04:1512:2948 min12:280 min22 Sep
Durban07:53 → 05:1511:2548 min11:250 min22 Sep
Dubai09:53 → 07:1511:4748 min11:470 min22 Sep
Delhi11:23 → 08:4511:5048 min11:490 min22 Sep
Kolkata11:23 → 08:4511:0530 min11:050 min22 Sep
Singapore13:23 → 10:4512:030 min12:030 min23 Sep
Sydney15:53 → 13:1511:240 min11:2448 min23 Sep
Suva17:53 → 15:1511:350 min11:3548 min23 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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