Ruling · Anaṅga Trayodaśī · 2001

Friday 6 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 245 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 Thursday 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 Friday 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 19:46 on Thu 5 Apr to 16:50 on Fri 6 Apr.

    2001-04-05T11:46:13Z → 2001-04-06T08:49:50Z

  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 14693 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 2001: Friday 6 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 2001 falls on Friday 6 April. Trayodaśī runs from 19:46 on Thu 5 Apr to 16:50 on Fri 6 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2001/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 6 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 6 Apr
compat-drikpanchangComparison profileFri 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 Angeles04:46 → 01:5012:3248 min12:320 min5 Apr
Chicago06:46 → 03:5012:3048 min12:290 min5 Apr
Jersey City07:46 → 04:5012:3548 min12:350 min5 Apr
Port of Spain07:46 → 04:5011:4548 min11:440 min5 Apr
London12:46 → 09:5012:4041 min12:390 min5 Apr
Durban13:46 → 10:5011:340 min11:340 min6 Apr
Dubai15:46 → 12:5011:580 min11:5748 min6 Apr
Delhi17:16 → 14:2012:000 min12:0048 min6 Apr
Kolkata17:16 → 14:2011:150 min11:1548 min6 Apr
Singapore19:46 → 16:5012:430 min12:4348 min6 Apr
Sydney21:46 → 18:5011:340 min11:3348 min6 Apr
Suva23:46 → 20:5011:450 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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