Ruling · Vāmana Jayantī · 1988

Friday 23 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 78 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 22 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

0 of 48 minutes covered

Midday of Friday 23 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 16:56 on Thu 22 Sep to 13:52 on Fri 23 Sep.

    1988-09-22T08:56:25Z → 1988-09-23T05:52:27Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 22nd, 11:46–12:34 on the 23rd.

    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 22nd and 48 of 48 on the 23rd.

    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 4695 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1988: Friday 23 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1988 falls on Friday 23 September. Dvādaśī runs from 16:56 on Thu 22 Sep to 13:52 on Fri 23 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1988/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 23 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 23 Sep
compat-drikpanchangComparison profileFri 23 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 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles01:56 → 22:5212:2148 min12:210 min22 Sep
Chicago03:56 → 00:5212:1948 min12:180 min22 Sep
Jersey City04:56 → 01:5212:2548 min12:240 min22 Sep
Port of Spain04:56 → 01:5211:3548 min11:340 min22 Sep
London09:56 → 06:5212:2948 min12:280 min22 Sep
Durban10:56 → 07:5211:2548 min11:240 min22 Sep
Dubai12:56 → 09:5211:470 min11:470 min23 Sep
Delhi14:26 → 11:2211:500 min11:490 min23 Sep
Kolkata14:26 → 11:2211:050 min11:0518 min23 Sep
Singapore16:56 → 13:5212:330 min12:3348 min23 Sep
Sydney18:56 → 15:5211:240 min11:2448 min23 Sep
Suva20:56 → 17:5211:350 min11:3548 min23 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