Ruling · Vāmana Jayantī · 1989

Tuesday 12 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 349 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 12 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

Midday of Wednesday 13 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

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 07:01 on Tue 12 Sep to 05:22 on Wed 13 Sep.

    1989-09-11T22:01:28Z → 1989-09-12T20:21:33Z

  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 48 of 48 minutes on the 12th and 0 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 20924 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1989: Tuesday 12 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1989 falls on Tuesday 12 September. Dvādaśī runs from 07:01 on Tue 12 Sep to 05:22 on Wed 13 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1989/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 12 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 12 Sep
compat-drikpanchangComparison profileTue 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles15:01 → 13:2212:250 min12:2548 min12 Sep
Chicago17:01 → 15:2212:230 min12:2248 min12 Sep
Jersey City18:01 → 16:2212:290 min12:2848 min12 Sep
Port of Spain18:01 → 16:2211:390 min11:3848 min12 Sep
London23:01 → 21:2212:330 min12:3248 min12 Sep
Durban00:01 → 22:2211:290 min11:2848 min12 Sep
Dubai02:01 → 00:2211:510 min11:5148 min12 Sep
Delhi03:31 → 01:5211:540 min11:5348 min12 Sep
Kolkata03:31 → 01:5211:090 min11:0948 min12 Sep
Singapore06:01 → 04:2212:370 min12:3748 min12 Sep
Sydney08:01 → 06:2211:280 min11:2848 min12 Sep
Suva10:01 → 08:2211:390 min11:3948 min12 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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