Ruling · Vāmana Jayantī · 2002

Wednesday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 135 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 Tuesday 17 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

Midday of Wednesday 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

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

How it was decided

  1. 01

    Aṅga

    Dvādaśī runs from 14:51 on Tue 17 Sep to 16:10 on Wed 18 Sep.

    2002-09-17T06:51:05Z → 2002-09-18T08:09:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 17th, 11:48–12:36 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 8076 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2002: Wednesday 18 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2002 falls on Wednesday 18 September. Dvādaśī runs from 14:51 on Tue 17 Sep to 16:10 on Wed 18 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2002/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 18 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 18 Sep
compat-drikpanchangComparison profileWed 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 18thCoveredRuled
Los Angeles23:51 → 01:1012:2348 min12:230 min17 Sep
Chicago01:51 → 03:1012:2148 min12:200 min17 Sep
Jersey City02:51 → 04:1012:2648 min12:260 min17 Sep
Port of Spain02:51 → 04:1011:3648 min11:360 min17 Sep
London07:51 → 09:1012:3148 min12:300 min17 Sep
Durban08:51 → 10:1011:2748 min11:260 min17 Sep
Dubai10:51 → 12:1011:4948 min11:4921 min17 Sep
Delhi12:21 → 13:4011:5118 min11:5148 min18 Sep
Kolkata12:21 → 13:4011:070 min11:0748 min18 Sep
Singapore14:51 → 16:1012:350 min12:3548 min18 Sep
Sydney16:51 → 18:1011:260 min11:2648 min18 Sep
Suva18:51 → 20:1011:370 min11:3748 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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