Ruling · Vāmana Jayantī · 2008

Friday 12 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 279 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 11 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Friday 12 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

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 17:17 on Thu 11 Sep to 18:16 on Fri 12 Sep.

    2008-09-11T09:17:22Z → 2008-09-12T10:15:37Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 11th, 11:50–12:38 on the 12th.

    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 11th and 48 of 48 on the 12th.

    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 16737 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2008: Friday 12 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2008 falls on Friday 12 September. Dvādaśī runs from 17:17 on Thu 11 Sep to 18:16 on Fri 12 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2008/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 12 Sep
compat-drikpanchangComparison profileFri 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles02:17 → 03:1612:2548 min12:250 min11 Sep
Chicago04:17 → 05:1612:2348 min12:220 min11 Sep
Jersey City05:17 → 06:1612:2848 min12:280 min11 Sep
Port of Spain05:17 → 06:1611:3848 min11:380 min11 Sep
London10:17 → 11:1612:3248 min12:320 min11 Sep
Durban11:17 → 12:1611:2948 min11:2847 min11 Sep
Dubai13:17 → 14:1611:510 min11:5148 min12 Sep
Delhi14:47 → 15:4611:530 min11:5348 min12 Sep
Kolkata14:47 → 15:4611:090 min11:0948 min12 Sep
Singapore17:17 → 18:1612:370 min12:3748 min12 Sep
Sydney19:17 → 20:1611:280 min11:2848 min12 Sep
Suva21:17 → 22:1611:390 min11:3948 min12 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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