Ruling · Anaṅga Trayodaśī · 1949

Monday 11 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 401 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 Sunday 10 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

0 of 48 minutes covered

Midday of Monday 11 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

48 of 48 minutes covered

Trayodaśī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Trayodaśī runs from 22:54 on Sun 10 Apr to 19:25 on Mon 11 Apr.

    1949-04-10T14:53:43Z → 1949-04-11T11:24:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 10th, 11:56–12:44 on the 11th.

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

  3. 03

    Rule

    Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 24068 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1949: Monday 11 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1949 falls on Monday 11 April. Trayodaśī runs from 22:54 on Sun 10 Apr to 19:25 on Mon 11 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1949/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 11 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 11 Apr
compat-drikpanchangComparison profileMon 11 Apr
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/ananga-trayodashi · ruleset 2026.3-draft

Month
Caitra, amānta
Pakṣa · aṅga
Śukla · Trayodaśī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceTrayodaśīMadhyāhna 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles06:54 → 03:2511:3148 min11:300 min10 Apr
Chicago08:54 → 05:2511:2848 min11:280 min10 Apr
Jersey City09:54 → 06:2511:3448 min11:340 min10 Apr
Port of Spain10:54 → 07:2511:4348 min11:430 min10 Apr
London15:54 → 12:2512:380 min12:380 min11 Apr
Durban16:54 → 13:2511:330 min11:3348 min11 Apr
Dubai18:54 → 15:2511:560 min11:5648 min11 Apr
Delhi20:24 → 16:5511:590 min11:5848 min11 Apr
Kolkata20:24 → 16:5511:140 min11:1448 min11 Apr
Singapore22:24 → 18:5512:120 min12:1248 min11 Apr
Sydney00:54 → 21:2511:320 min11:3248 min11 Apr
Suva02:54 → 23:2511:440 min11:4348 min11 Apr
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ananga-trayodashi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa