Ruling · Vāmana Jayantī · 2005

Thursday 15 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 452 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 Wednesday 14 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 Thursday 15 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 23:24 on Wed 14 Sep to 20:09 on Thu 15 Sep.

    2005-09-14T15:24:15Z → 2005-09-15T12:09:27Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 14th, 11:49–12:37 on the 15th.

    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 14th and 48 of 48 on the 15th.

    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 27141 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2005: Thursday 15 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2005 falls on Thursday 15 September. Dvādaśī runs from 23:24 on Wed 14 Sep to 20:09 on Thu 15 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2005/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 15 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 15 Sep
compat-drikpanchangComparison profileThu 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles08:24 → 05:0912:2448 min12:240 min14 Sep
Chicago10:24 → 07:0912:2248 min12:210 min14 Sep
Jersey City11:24 → 08:0912:2748 min12:270 min14 Sep
Port of Spain11:24 → 08:0911:3748 min11:370 min14 Sep
London16:24 → 13:0912:320 min12:3138 min15 Sep
Durban17:24 → 14:0911:280 min11:2748 min15 Sep
Dubai19:24 → 16:0911:500 min11:5048 min15 Sep
Delhi20:54 → 17:3911:520 min11:5248 min15 Sep
Kolkata20:54 → 17:3911:080 min11:0848 min15 Sep
Singapore23:24 → 20:0912:360 min12:3648 min15 Sep
Sydney01:24 → 22:0911:270 min11:2748 min15 Sep
Suva03:24 → 00:0911:380 min11:3848 min15 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

About Ahargaṇa