Ruling · Vāmana Jayantī · 2028

Thursday 31 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 635 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 30 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 of 48 minutes covered

Midday of Thursday 31 August

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 23:17 on Wed 30 Aug to 01:01 on Fri 1 Sep.

    2028-08-30T15:17:22Z → 2028-08-31T17:01:03Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 30th, 11:54–12:42 on the 31st.

    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 30th and 48 of 48 on the 31st.

    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 38098 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2028: Thursday 31 August.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2028 falls on Thursday 31 August. Dvādaśī runs from 23:17 on Wed 30 Aug to 01:01 on Fri 1 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2028/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Aug
Ahargaṇa, classicalDisc centre, no refractionThu 31 Aug
compat-drikpanchangComparison profileThu 31 Aug
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles08:17 → 10:0112:2948 min12:290 min30 Aug
Chicago10:17 → 12:0112:2748 min12:260 min30 Aug
Jersey City11:17 → 13:0112:3248 min12:3229 min30 Aug
Port of Spain11:17 → 13:0111:4248 min11:4248 min30 Aug
London16:17 → 18:0112:360 min12:3648 min31 Aug
Durban17:17 → 19:0111:330 min11:3248 min31 Aug
Dubai19:17 → 21:0111:550 min11:5548 min31 Aug
Delhi20:47 → 22:3111:570 min11:5748 min31 Aug
Kolkata20:47 → 22:3111:130 min11:1348 min31 Aug
Singapore23:17 → 01:0112:410 min12:4148 min31 Aug
Sydney01:17 → 03:0111:320 min11:3248 min31 Aug
Suva03:17 → 05:0111:430 min11:4348 min31 Aug
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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