Ruling · Vāmana Jayantī · 1957

Thursday 5 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 359 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 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

Midday of Friday 6 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 03:55 on Thu 5 Sep to 05:53 on Fri 6 Sep.

    1957-09-04T19:55:03Z → 1957-09-05T21:53:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 5th, 11:52–12:40 on the 6th.

    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 5th and 0 of 48 on the 6th.

    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 21540 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1957: Thursday 5 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1957 falls on Thursday 5 September. Dvādaśī runs from 03:55 on Thu 5 Sep to 05:53 on Fri 6 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1957/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 5 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 5 Sep
compat-drikpanchangComparison profileThu 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 Angeles12:55 → 14:5312:2821 min12:2748 min5 Sep
Chicago14:55 → 16:5312:250 min12:2548 min5 Sep
Jersey City15:55 → 17:5312:310 min12:3148 min5 Sep
Port of Spain15:55 → 17:5311:410 min11:4148 min5 Sep
London20:55 → 22:5312:350 min12:3548 min5 Sep
Durban21:55 → 23:5311:310 min11:3148 min5 Sep
Dubai23:55 → 01:5311:540 min11:5348 min5 Sep
Delhi01:25 → 03:2311:560 min11:5648 min5 Sep
Kolkata01:25 → 03:2311:120 min11:1148 min5 Sep
Singapore03:25 → 05:2312:100 min12:0948 min5 Sep
Sydney05:55 → 07:5311:310 min11:3048 min5 Sep
Suva07:55 → 09:5311:420 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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