Ruling · Vāmana Jayantī · 2038

Friday 10 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 339 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 9 September

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Friday 10 September

Taken. The only midday Dvādaśī reaches.

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

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 18:22 on Thu 9 Sep to 18:18 on Fri 10 Sep.

    2038-09-09T10:21:56Z → 2038-09-10T10:18:01Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 9th, 11:51–12:39 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 20345 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2038: Friday 10 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2038 falls on Friday 10 September. Dvādaśī runs from 18:22 on Thu 9 Sep to 18:18 on Fri 10 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2038/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 10 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 10 Sep
compat-drikpanchangComparison profileFri 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles03:22 → 03:1812:2648 min12:260 min9 Sep
Chicago05:22 → 05:1812:2348 min12:230 min9 Sep
Jersey City06:22 → 06:1812:2948 min12:290 min9 Sep
Port of Spain06:22 → 06:1811:3948 min11:390 min9 Sep
London11:22 → 11:1812:3348 min12:330 min9 Sep
Durban12:22 → 12:1811:290 min11:2948 min10 Sep
Dubai14:22 → 14:1811:520 min11:5248 min10 Sep
Delhi15:52 → 15:4811:540 min11:5448 min10 Sep
Kolkata15:52 → 15:4811:100 min11:0948 min10 Sep
Singapore18:22 → 18:1812:380 min12:3848 min10 Sep
Sydney20:22 → 20:1811:290 min11:2948 min10 Sep
Suva22:22 → 22:1811:400 min11:4048 min10 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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