Ruling · Anaṅga Trayodaśī · 1921

Wednesday 20 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 342 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 Tuesday 19 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 of 48 minutes covered

Midday of Wednesday 20 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 20:13 on Tue 19 Apr to 18:24 on Wed 20 Apr.

    1921-04-19T12:12:41Z → 1921-04-20T10:23:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 19th, 11:54–12:42 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 20533 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1921: Wednesday 20 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1921 falls on Wednesday 20 April. Trayodaśī runs from 20:13 on Tue 19 Apr to 18:24 on Wed 20 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1921/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Apr
Ahargaṇa, classicalDisc centre, no refractionWed 20 Apr
compat-drikpanchangComparison profileWed 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles04:13 → 02:2411:2848 min11:280 min19 Apr
Chicago07:13 → 05:2412:2648 min12:260 min19 Apr
Jersey City07:13 → 05:2411:3248 min11:320 min19 Apr
Port of Spain08:13 → 06:2411:4148 min11:410 min19 Apr
London13:13 → 11:2412:3612 min12:360 min19 Apr
Durban14:13 → 12:2411:310 min11:3148 min20 Apr
Dubai16:13 → 14:2411:540 min11:5448 min20 Apr
Delhi17:43 → 15:5411:570 min11:5648 min20 Apr
Kolkata17:43 → 15:5411:120 min11:1248 min20 Apr
Singapore19:13 → 17:2411:400 min11:4048 min20 Apr
Sydney22:13 → 20:2411:300 min11:3048 min20 Apr
Suva00:13 → 22:2411:410 min11:4148 min20 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