Ruling · Vāmana Jayantī · 1939

Monday 25 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 Sunday 24 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvādaśī begins 13:05:27
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

Midday of Monday 25 September

Taken. The only midday Dvādaśī reaches.

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

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 13:05 on Sun 24 Sep to 15:33 on Mon 25 Sep.

    1939-09-24T05:05:27Z → 1939-09-25T07:33:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 24th, 11:46–12:34 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 1873 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1939: Monday 25 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1939 falls on Monday 25 September. Dvādaśī runs from 13:05 on Sun 24 Sep to 15:33 on Mon 25 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1939/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 25 Sep
Ahargaṇa, classicalDisc centre, no refractionMon 25 Sep
compat-drikpanchangComparison profileMon 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles21:05 → 23:3311:2148 min11:210 min24 Sep
Chicago00:05 → 01:3311:1848 min11:180 min24 Sep
Jersey City01:05 → 02:3311:2448 min11:240 min24 Sep
Port of Spain01:05 → 03:3311:3448 min11:340 min24 Sep
London06:05 → 08:3312:2848 min12:280 min24 Sep
Durban07:05 → 09:3311:2448 min11:240 min24 Sep
Dubai09:05 → 11:3311:4748 min11:470 min24 Sep
Delhi10:35 → 13:0311:4948 min11:4948 min24 Sep
Kolkata10:35 → 13:0311:0548 min11:0448 min24 Sep
Singapore12:25 → 14:5311:5316 min11:5348 min25 Sep
Sydney15:05 → 17:3311:240 min11:2448 min25 Sep
Suva17:05 → 19:3311:350 min11:3548 min25 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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