Ruling · Vāmana Jayantī · 1925

Monday 31 August

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 64 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 Sunday 30 August

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Monday 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 16:52 on Sun 30 Aug to 13:46 on Mon 31 Aug.

    1925-08-30T08:52:09Z → 1925-08-31T05:46:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 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 3849 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1925: Monday 31 August.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1925 falls on Monday 31 August. Dvādaśī runs from 16:52 on Sun 30 Aug to 13:46 on Mon 31 Aug and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1925/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 31 Aug
Ahargaṇa, classicalDisc centre, no refractionMon 31 Aug
compat-drikpanchangComparison profileMon 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 Angeles00:52 → 21:4611:2948 min11:290 min30 Aug
Chicago03:52 → 00:4612:2748 min12:270 min30 Aug
Jersey City04:52 → 01:4612:3348 min12:320 min30 Aug
Port of Spain04:52 → 01:4611:4348 min11:420 min30 Aug
London09:52 → 06:4612:3748 min12:360 min30 Aug
Durban10:52 → 07:4611:3348 min11:320 min30 Aug
Dubai12:52 → 09:4611:550 min11:550 min31 Aug
Delhi14:22 → 11:1611:580 min11:570 min31 Aug
Kolkata14:22 → 11:1611:130 min11:134 min31 Aug
Singapore15:52 → 12:4611:410 min11:4148 min31 Aug
Sydney18:52 → 15:4611:320 min11:3248 min31 Aug
Suva20:52 → 17:4611:430 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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