Ruling · Vāmana Jayantī · 2049

Thursday 9 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 36 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 Wednesday 8 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

0 of 48 minutes covered

Midday of Thursday 9 September

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

madhyāhna begins 11:51  12:39 madhyāhna ends
Dvādaśī ends 11:14:58
11:0311:2711:5112:1512:3913:0313:27

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 14:28 on Wed 8 Sep to 11:15 on Thu 9 Sep.

    2049-09-08T06:28:00Z → 2049-09-09T03:14:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 8th, 11:51–12:39 on the 9th.

    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 8th and 0 of 48 on the 9th.

    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 2174 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2049: Thursday 9 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2049 falls on Thursday 9 September. Dvādaśī runs from 14:28 on Wed 8 Sep to 11:15 on Thu 9 Sep, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2049/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 9 Sep
compat-drikpanchangComparison profileThu 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles23:28 → 20:1512:2648 min12:260 min8 Sep
Chicago01:28 → 22:1512:2448 min12:230 min8 Sep
Jersey City02:28 → 23:1512:3048 min12:290 min8 Sep
Port of Spain02:28 → 23:1511:4048 min11:390 min8 Sep
London07:28 → 04:1512:3448 min12:330 min8 Sep
Durban08:28 → 05:1511:3048 min11:290 min8 Sep
Dubai10:28 → 07:1511:5248 min11:520 min8 Sep
Delhi11:58 → 08:4511:5545 min11:540 min8 Sep
Kolkata11:58 → 08:4511:100 min11:100 min8 Sep
Singapore14:28 → 11:1512:380 min12:380 min9 Sep
Sydney16:28 → 13:1511:290 min11:2948 min9 Sep
Suva18:28 → 15:1511:400 min11:4048 min9 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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