Ruling · Vāmana Jayantī · 1983

Sunday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 209 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 Sunday 18 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

Midday of Monday 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

Dvādaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 05:48 on Sun 18 Sep to 08:19 on Mon 19 Sep.

    1983-09-17T21:47:53Z → 1983-09-19T00:18:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 18th, 11:48–12:36 on the 19th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.

    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 12546 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1983: Sunday 18 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1983 falls on Sunday 18 September. Dvādaśī runs from 05:48 on Sun 18 Sep to 08:19 on Mon 19 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 18 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 18 Sep
compat-drikpanchangComparison profileSun 18 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 17thCoveredMadhyāhna 19thCoveredRuled
Los Angeles14:48 → 17:1912:230 min12:230 min18 Sep
Chicago16:48 → 19:1912:210 min12:200 min18 Sep
Jersey City17:48 → 20:1912:270 min12:260 min18 Sep
Port of Spain17:48 → 20:1911:370 min11:360 min18 Sep
London22:48 → 01:1912:310 min12:300 min18 Sep
Durban23:48 → 02:1911:270 min11:260 min18 Sep
Dubai01:48 → 04:1911:490 min11:490 min18 Sep
Delhi03:18 → 05:4911:520 min11:510 min18 Sep
Kolkata03:18 → 05:4911:070 min11:060 min18 Sep
Singapore05:48 → 08:1912:350 min12:350 min18 Sep
Sydney07:48 → 10:1911:260 min11:260 min18 Sep
Suva09:48 → 12:1911:370 min11:3742 min18 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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