Ruling · Anaṅga Trayodaśī · 1983

Monday 25 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 275 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 24 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Monday 25 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 19:09 on Sun 24 Apr to 17:15 on Mon 25 Apr.

    1983-04-24T11:09:12Z → 1983-04-25T09:15:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 24th, 11:53–12:41 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 16482 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1983: Monday 25 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1983 falls on Monday 25 April. Trayodaśī runs from 19:09 on Sun 24 Apr to 17:15 on Mon 25 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1983/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 25 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 25 Apr
compat-drikpanchangComparison profileMon 25 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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles04:09 → 02:1512:2748 min12:270 min24 Apr
Chicago06:09 → 04:1512:2548 min12:250 min24 Apr
Jersey City07:09 → 05:1512:3148 min12:310 min24 Apr
Port of Spain07:09 → 05:1511:4048 min11:400 min24 Apr
London12:09 → 10:1512:3548 min12:350 min24 Apr
Durban13:09 → 11:1511:300 min11:300 min25 Apr
Dubai15:09 → 13:1511:530 min11:5348 min25 Apr
Delhi16:39 → 14:4511:560 min11:5548 min25 Apr
Kolkata16:39 → 14:4511:110 min11:1148 min25 Apr
Singapore19:09 → 17:1512:390 min12:3948 min25 Apr
Sydney21:09 → 19:1511:290 min11:2948 min25 Apr
Suva23:09 → 21:1511:410 min11:4048 min25 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

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