Ruling · Vāmana Jayantī · 2040

Tuesday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 63 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 Monday 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 Tuesday 18 September

Taken. Dvādaśī reaches neither midday; the rule takes the second day.

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 13:39 on Mon 17 Sep to 10:37 on Tue 18 Sep.

    2040-09-17T05:39:17Z → 2040-09-18T02:36:38Z

  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 0 of 48 on the 18th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 3782 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2040: Tuesday 18 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2040 falls on Tuesday 18 September. Dvādaśī runs from 13:39 on Mon 17 Sep to 10:37 on Tue 18 Sep, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2040/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 18 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 18 Sep
compat-drikpanchangComparison profileTue 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 Angeles22:39 → 19:3712:2348 min12:230 min17 Sep
Chicago00:39 → 21:3712:2048 min12:200 min17 Sep
Jersey City01:39 → 22:3712:2648 min12:260 min17 Sep
Port of Spain01:39 → 22:3711:3648 min11:360 min17 Sep
London06:39 → 03:3712:3048 min12:300 min17 Sep
Durban07:39 → 04:3711:2648 min11:260 min17 Sep
Dubai09:39 → 06:3711:4948 min11:490 min17 Sep
Delhi11:09 → 08:0711:5148 min11:510 min17 Sep
Kolkata11:09 → 08:0711:0745 min11:060 min17 Sep
Singapore13:39 → 10:3712:350 min12:350 min18 Sep
Sydney15:39 → 12:3711:260 min11:2648 min18 Sep
Suva17:39 → 14:3711:370 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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