Ruling · Vāmana Jayantī · 2089

Friday 16 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 522 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 15 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 of 48 minutes covered

Midday of Friday 16 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 21:19 on Thu 15 Sep to 23:47 on Fri 16 Sep.

    2089-09-15T13:19:03Z → 2089-09-16T15:46:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 31309 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2089: Friday 16 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2089 falls on Friday 16 September. Dvādaśī runs from 21:19 on Thu 15 Sep to 23:47 on Fri 16 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2089/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 16 Sep
compat-drikpanchangComparison profileFri 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles06:19 → 08:4712:2448 min12:240 min15 Sep
Chicago08:19 → 10:4712:2148 min12:210 min15 Sep
Jersey City09:19 → 11:4712:2748 min12:270 min15 Sep
Port of Spain09:19 → 11:4711:3748 min11:3710 min15 Sep
London14:19 → 16:4712:310 min12:3148 min16 Sep
Durban15:19 → 17:4711:270 min11:2748 min16 Sep
Dubai17:19 → 19:4711:500 min11:5048 min16 Sep
Delhi18:49 → 21:1711:520 min11:5248 min16 Sep
Kolkata18:49 → 21:1711:080 min11:0748 min16 Sep
Singapore21:19 → 23:4712:360 min12:3648 min16 Sep
Sydney23:19 → 01:4711:270 min11:2748 min16 Sep
Suva01:19 → 03:4711:380 min11:3848 min16 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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