Ruling · Vāmana Jayantī · 1940

Friday 13 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 171 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 Thursday 12 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:50  13:38 madhyāhna ends
12:0212:2612:5013:1413:3814:0214:26

0 of 48 minutes covered

Midday of Friday 13 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 12:50  13:38 madhyāhna ends
12:0212:2612:5013:1413:3814:0214:26

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 16:29 on Thu 12 Sep to 17:42 on Fri 13 Sep.

    1940-09-12T07:29:22Z → 1940-09-13T08:41:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:50–13:38 on the 12th, 12:50–13:38 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 10270 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1940: Friday 13 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1940 falls on Friday 13 September. Dvādaśī runs from 16:29 on Thu 12 Sep to 17:42 on Fri 13 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1940/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 13 Sep
compat-drikpanchangComparison profileFri 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles23:29 → 00:4211:2548 min11:240 min12 Sep
Chicago02:29 → 03:4212:2248 min12:220 min12 Sep
Jersey City03:29 → 04:4212:2848 min12:280 min12 Sep
Port of Spain03:29 → 04:4211:3848 min11:380 min12 Sep
London08:29 → 09:4212:3248 min12:320 min12 Sep
Durban09:29 → 10:4211:2848 min11:280 min12 Sep
Dubai11:29 → 12:4211:5148 min11:5148 min12 Sep
Delhi12:59 → 14:1211:530 min11:5348 min13 Sep
Kolkata12:59 → 14:1211:090 min11:0848 min13 Sep
Singapore14:49 → 16:0211:570 min11:5748 min13 Sep
Sydney17:29 → 18:4211:280 min11:2748 min13 Sep
Suva19:29 → 20:4211:390 min11:3948 min13 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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