Ruling · Vāmana Jayantī · 1964

Friday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 573 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 Friday 18 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Saturday 19 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

0 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 01:11 on Fri 18 Sep to 02:15 on Sat 19 Sep.

    1964-09-17T17:10:30Z → 1964-09-18T18:15:06Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 18th, 11:48–12:36 on the 19th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.

    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 34354 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1964: Friday 18 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1964 falls on Friday 18 September. Dvādaśī runs from 01:11 on Fri 18 Sep to 02:15 on Sat 19 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1964/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 18 Sep
compat-drikpanchangComparison profileFri 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles10:11 → 11:1512:2348 min12:230 min17 Sep
Chicago12:11 → 13:1512:2148 min12:2048 min17 Sep
Jersey City13:11 → 14:1512:264 min12:2648 min18 Sep
Port of Spain13:11 → 14:1511:360 min11:3648 min18 Sep
London18:11 → 19:1512:300 min12:3048 min18 Sep
Durban19:11 → 20:1511:270 min11:2648 min18 Sep
Dubai21:11 → 22:1511:490 min11:4948 min18 Sep
Delhi22:41 → 23:4511:510 min11:5148 min18 Sep
Kolkata22:41 → 23:4511:070 min11:0748 min18 Sep
Singapore00:41 → 01:4512:050 min12:0548 min18 Sep
Sydney03:11 → 04:1511:260 min11:2648 min18 Sep
Suva05:11 → 06:1511:370 min11:3748 min18 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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