Ruling · Anaṅga Trayodaśī · 1973

Sunday 15 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 458 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 Saturday 14 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

0 of 48 minutes covered

Midday of Sunday 15 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:55  12:43 madhyāhna ends
11:0711:3111:5512:1912:4313:0713:31

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 20:21 on Sat 14 Apr to 20:26 on Sun 15 Apr.

    1973-04-14T12:21:05Z → 1973-04-15T12:26:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 14th, 11:55–12:43 on the 15th.

    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 14th and 48 of 48 on the 15th.

    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 27493 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1973: Sunday 15 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1973 falls on Sunday 15 April. Trayodaśī runs from 20:21 on Sat 14 Apr to 20:26 on Sun 15 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1973/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 15 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 15 Apr
compat-drikpanchangComparison profileSun 15 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles04:21 → 04:2611:2948 min11:290 min14 Apr
Chicago06:21 → 06:2611:2748 min11:270 min14 Apr
Jersey City07:21 → 07:2611:3348 min11:330 min14 Apr
Port of Spain08:21 → 08:2611:4248 min11:420 min14 Apr
London13:21 → 13:2612:374 min12:3748 min14 Apr
Durban14:21 → 14:2611:320 min11:3248 min15 Apr
Dubai16:21 → 16:2611:550 min11:5548 min15 Apr
Delhi17:51 → 17:5611:580 min11:5748 min15 Apr
Kolkata17:51 → 17:5611:130 min11:1348 min15 Apr
Singapore19:51 → 19:5612:110 min12:1148 min15 Apr
Sydney22:21 → 22:2611:310 min11:3148 min15 Apr
Suva00:21 → 00:2611:430 min11:4248 min15 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