Ruling · Vāmana Jayantī · 2087

Tuesday 9 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 332 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 9 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 10 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

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 06:20 on Tue 9 Sep to 05:55 on Wed 10 Sep.

    2087-09-08T22:19:43Z → 2087-09-09T21:55:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 9th, 11:51–12:39 on the 10th.

    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 9th and 0 of 48 on the 10th.

    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 19909 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2087: Tuesday 9 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2087 falls on Tuesday 9 September. Dvādaśī runs from 06:20 on Tue 9 Sep to 05:55 on Wed 10 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2087/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 9 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 9 Sep
compat-drikpanchangComparison profileTue 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles15:20 → 14:5512:270 min12:2648 min9 Sep
Chicago17:20 → 16:5512:240 min12:2448 min9 Sep
Jersey City18:20 → 17:5512:300 min12:2948 min9 Sep
Port of Spain18:20 → 17:5511:400 min11:4048 min9 Sep
London23:20 → 22:5512:340 min12:3448 min9 Sep
Durban00:20 → 23:5511:300 min11:3048 min9 Sep
Dubai02:20 → 01:5511:530 min11:5248 min9 Sep
Delhi03:50 → 03:2511:550 min11:5548 min9 Sep
Kolkata03:50 → 03:2511:100 min11:1048 min9 Sep
Singapore06:20 → 05:5512:390 min12:3848 min9 Sep
Sydney08:20 → 07:5511:300 min11:2948 min9 Sep
Suva10:20 → 09:5511:410 min11:4048 min9 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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