Ruling · Vāmana Jayantī · 1977

Saturday 24 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 332 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 23 September

Dvādaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

0 of 48 minutes covered

Midday of Saturday 24 September

Taken. The only midday Dvādaśī reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 19:30 on Fri 23 Sep to 18:06 on Sat 24 Sep.

    1977-09-23T11:30:22Z → 1977-09-24T10:06:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 23rd, 11:46–12:34 on the 24th.

    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 23rd and 48 of 48 on the 24th.

    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 19939 s

  5. 05

    Ruling

    Vāmana Jayantī, Baoding, 1977: Saturday 24 September.

    confidence: determinate

Say it like this

In Baoding, Vāmana Jayantī 1977 falls on Saturday 24 September. Dvādaśī runs from 19:30 on Fri 23 Sep to 18:06 on Sat 24 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1977/vamana-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 24 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 24 Sep
compat-drikpanchangComparison profileSat 24 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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles04:30 → 03:0612:2148 min12:210 min23 Sep
Chicago06:30 → 05:0612:1948 min12:180 min23 Sep
Jersey City07:30 → 06:0612:2448 min12:240 min23 Sep
Port of Spain07:30 → 06:0611:3448 min11:340 min23 Sep
London12:30 → 11:0612:2846 min12:280 min23 Sep
Durban13:30 → 12:0611:250 min11:2442 min24 Sep
Dubai15:30 → 14:0611:470 min11:4748 min24 Sep
Delhi17:00 → 15:3611:490 min11:4948 min24 Sep
Kolkata17:00 → 15:3611:050 min11:0548 min24 Sep
Singapore19:00 → 17:3612:030 min12:0348 min24 Sep
Sydney21:30 → 20:0611:240 min11:2448 min24 Sep
Suva23:30 → 22:0611:350 min11:3548 min24 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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