Ruling · Vāmana Jayantī · 2086

Friday 20 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 440 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 19 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

0 of 48 minutes covered

Midday of Friday 20 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

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 22:31 on Thu 19 Sep to 19:56 on Fri 20 Sep.

    2086-09-19T14:31:03Z → 2086-09-20T11:55:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:48–12:36 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 26400 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2086: Friday 20 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2086 falls on Friday 20 September. Dvādaśī runs from 22:31 on Thu 19 Sep to 19:56 on Fri 20 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2086/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 20 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 20 Sep
compat-drikpanchangComparison profileFri 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles07:31 → 04:5612:2348 min12:220 min19 Sep
Chicago09:31 → 06:5612:2048 min12:200 min19 Sep
Jersey City10:31 → 07:5612:2648 min12:250 min19 Sep
Port of Spain10:31 → 07:5611:3648 min11:360 min19 Sep
London15:31 → 12:5612:300 min12:3026 min20 Sep
Durban16:31 → 13:5611:260 min11:2648 min20 Sep
Dubai18:31 → 15:5611:490 min11:4848 min20 Sep
Delhi20:01 → 17:2611:510 min11:5148 min20 Sep
Kolkata20:01 → 17:2611:060 min11:0648 min20 Sep
Singapore22:31 → 19:5612:350 min12:3448 min20 Sep
Sydney00:31 → 21:5611:260 min11:2548 min20 Sep
Suva02:31 → 23:5611:370 min11:3648 min20 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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