Ruling · Anaṅga Trayodaśī · 2020

Monday 6 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 338 minutes.

Decide it for

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 5 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

0 of 48 minutes covered

Midday of Monday 6 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:57  12:45 madhyāhna ends
11:0911:3311:5712:2112:4513:0913:33

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 21:55 on Sun 5 Apr to 18:22 on Mon 6 Apr.

    2020-04-05T13:55:27Z → 2020-04-06T10:22:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 5th, 11:57–12:45 on the 6th.

    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 5th and 48 of 48 on the 6th.

    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 20252 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 2020: Monday 6 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 2020 falls on Monday 6 April. Trayodaśī runs from 21:55 on Sun 5 Apr to 18:22 on Mon 6 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2020/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 6 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 6 Apr
compat-drikpanchangComparison profileMon 6 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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles06:55 → 03:2212:3248 min12:310 min5 Apr
Chicago08:55 → 05:2212:2948 min12:290 min5 Apr
Jersey City09:55 → 06:2212:3548 min12:350 min5 Apr
Port of Spain09:55 → 06:2211:4548 min11:440 min5 Apr
London14:55 → 11:2212:400 min12:390 min6 Apr
Durban15:55 → 12:2211:340 min11:3448 min6 Apr
Dubai17:55 → 14:2211:580 min11:5748 min6 Apr
Delhi19:25 → 15:5212:000 min12:0048 min6 Apr
Kolkata19:25 → 15:5211:150 min11:1548 min6 Apr
Singapore21:55 → 18:2212:430 min12:4348 min6 Apr
Sydney23:55 → 20:2211:340 min11:3348 min6 Apr
Suva01:55 → 22:2211:450 min11:4548 min6 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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