Ruling · Vāmana Jayantī · 2090

Tuesday 5 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 570 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 Monday 4 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Tuesday 5 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 22:11 on Mon 4 Sep to 23:51 on Tue 5 Sep.

    2090-09-04T14:11:20Z → 2090-09-05T15:50:43Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 4th, 11:53–12:41 on the 5th.

    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 4th and 48 of 48 on the 5th.

    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 34210 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 2090: Tuesday 5 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 2090 falls on Tuesday 5 September. Dvādaśī runs from 22:11 on Mon 4 Sep to 23:51 on Tue 5 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2090/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 5 Sep
Ahargaṇa, classicalDisc centre, no refractionTue 5 Sep
compat-drikpanchangComparison profileTue 5 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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles07:11 → 08:5112:2848 min12:270 min4 Sep
Chicago09:11 → 10:5112:2548 min12:250 min4 Sep
Jersey City10:11 → 11:5112:3148 min12:310 min4 Sep
Port of Spain10:11 → 11:5111:4148 min11:4110 min4 Sep
London15:11 → 16:5112:350 min12:3548 min5 Sep
Durban16:11 → 17:5111:310 min11:3148 min5 Sep
Dubai18:11 → 19:5111:540 min11:5448 min5 Sep
Delhi19:41 → 21:2111:560 min11:5648 min5 Sep
Kolkata19:41 → 21:2111:120 min11:1148 min5 Sep
Singapore22:11 → 23:5112:400 min12:4048 min5 Sep
Sydney00:11 → 01:5111:310 min11:3048 min5 Sep
Suva02:11 → 03:5111:420 min11:4148 min5 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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