Ruling · Vāmana Jayantī · 1965

Tuesday 7 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 621 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 Tuesday 7 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

48 of 48 minutes covered

Midday of Wednesday 8 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 23:02 on Mon 6 Sep to 01:31 on Wed 8 Sep.

    1965-09-06T15:01:49Z → 1965-09-07T17:30:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 7th, 11:52–12:40 on the 8th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.

    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 37238 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1965: Tuesday 7 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1965 falls on Tuesday 7 September. Dvādaśī runs from 23:02 on Mon 6 Sep to 01:31 on Wed 8 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1965/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 7 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 7 Sep
compat-drikpanchangComparison profileTue 7 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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles08:02 → 10:3112:2748 min12:270 min6 Sep
Chicago10:02 → 12:3112:2548 min12:247 min6 Sep
Jersey City11:02 → 13:3112:3048 min12:3048 min6 Sep
Port of Spain11:02 → 13:3111:4048 min11:4048 min6 Sep
London16:02 → 18:3112:340 min12:3448 min7 Sep
Durban17:02 → 19:3111:300 min11:3048 min7 Sep
Dubai19:02 → 21:3111:530 min11:5348 min7 Sep
Delhi20:32 → 23:0111:550 min11:5548 min7 Sep
Kolkata20:32 → 23:0111:110 min11:1048 min7 Sep
Singapore22:32 → 01:0112:090 min12:0948 min7 Sep
Sydney01:02 → 03:3111:300 min11:3048 min7 Sep
Suva03:02 → 05:3111:410 min11:4148 min7 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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