Ruling · Vāmana Jayantī · 2015

Friday 25 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 537 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 24 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

Midday of Friday 25 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 00:20 on Fri 25 Sep to 21:31 on Fri 25 Sep.

    2015-09-24T16:20:02Z → 2015-09-25T13:30:32Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 24th, 11:46–12:34 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 32209 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2015: Friday 25 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2015 falls on Friday 25 September. Dvādaśī runs from 00:20 on Fri 25 Sep to 21:31 on Fri 25 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2015/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 25 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 25 Sep
compat-drikpanchangComparison profileFri 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles09:20 → 06:3112:2148 min12:200 min24 Sep
Chicago11:20 → 08:3112:1848 min12:180 min24 Sep
Jersey City12:20 → 09:3112:2448 min12:240 min24 Sep
Port of Spain12:20 → 09:3111:342 min11:340 min24 Sep
London17:20 → 14:3112:280 min12:2848 min25 Sep
Durban18:20 → 15:3111:240 min11:2448 min25 Sep
Dubai20:20 → 17:3111:470 min11:4648 min25 Sep
Delhi21:50 → 19:0111:490 min11:4948 min25 Sep
Kolkata21:50 → 19:0111:050 min11:0448 min25 Sep
Singapore00:20 → 21:3112:330 min12:3248 min25 Sep
Sydney02:20 → 23:3111:240 min11:2348 min25 Sep
Suva04:20 → 01:3111:350 min11:3448 min25 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