Ruling · Vāmana Jayantī · 1910

Friday 16 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 383 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 15 September

Dvādaśī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Friday 16 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 19:45 on Thu 15 Sep to 19:00 on Fri 16 Sep.

    1910-09-15T11:44:43Z → 1910-09-16T11:00:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 15th, 11:49–12:37 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 22981 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1910: Friday 16 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1910 falls on Friday 16 September. Dvādaśī runs from 19:45 on Thu 15 Sep to 19:00 on Fri 16 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1910/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 16 Sep
compat-drikpanchangComparison profileFri 16 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles03:45 → 03:0011:2448 min11:240 min15 Sep
Chicago05:45 → 05:0011:2248 min11:210 min15 Sep
Jersey City06:45 → 06:0011:2748 min11:270 min15 Sep
Port of Spain07:45 → 07:0011:3748 min11:370 min15 Sep
London11:45 → 11:0011:3135 min11:310 min15 Sep
Durban13:45 → 13:0011:280 min11:2748 min16 Sep
Dubai15:26 → 14:4111:310 min11:3148 min16 Sep
Delhi17:15 → 16:3011:520 min11:5248 min16 Sep
Kolkata17:15 → 16:3011:080 min11:0848 min16 Sep
Singapore18:45 → 18:0011:360 min11:3648 min16 Sep
Sydney21:45 → 21:0011:270 min11:2748 min16 Sep
Suva23:40 → 22:5511:330 min11:3348 min16 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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