Ruling · Vāmana Jayantī · 1997

Sunday 14 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 58 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 Saturday 13 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 Sunday 14 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

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 16:29 on Sat 13 Sep to 13:35 on Sun 14 Sep.

    1997-09-13T08:28:43Z → 1997-09-14T05:35:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 13th, 11:49–12:37 on the 14th.

    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 13th and 48 of 48 on the 14th.

    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 3461 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1997: Sunday 14 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1997 falls on Sunday 14 September. Dvādaśī runs from 16:29 on Sat 13 Sep to 13:35 on Sun 14 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 14 Sep
Ahargaṇa, classicalDisc centre, no refractionSun 14 Sep
compat-drikpanchangComparison profileSun 14 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles01:29 → 22:3512:2448 min12:240 min13 Sep
Chicago03:29 → 00:3512:2248 min12:220 min13 Sep
Jersey City04:29 → 01:3512:2848 min12:270 min13 Sep
Port of Spain04:29 → 01:3511:3848 min11:370 min13 Sep
London09:29 → 06:3512:3248 min12:320 min13 Sep
Durban10:29 → 07:3511:2848 min11:280 min13 Sep
Dubai12:29 → 09:3511:5110 min11:500 min13 Sep
Delhi13:59 → 11:0511:530 min11:520 min14 Sep
Kolkata13:59 → 11:0511:080 min11:080 min14 Sep
Singapore16:29 → 13:3512:370 min12:3648 min14 Sep
Sydney18:29 → 15:3511:270 min11:2748 min14 Sep
Suva20:29 → 17:3511:380 min11:3848 min14 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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