Ruling · Anaṅga Trayodaśī · 2091

Monday 2 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 249 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 1 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:59  12:47 madhyāhna ends
11:1111:3511:5912:2312:4713:1113:35

0 of 48 minutes covered

Midday of Monday 2 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:58  12:46 madhyāhna ends
11:1011:3411:5812:2212:4613:1013:34

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 20:06 on Sun 1 Apr to 16:55 on Mon 2 Apr.

    2091-04-01T12:06:15Z → 2091-04-02T08:55:08Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 1st, 11:58–12:46 on the 2nd.

    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 1st and 48 of 48 on the 2nd.

    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 14926 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 2091: Monday 2 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 2091 falls on Monday 2 April. Trayodaśī runs from 20:06 on Sun 1 Apr to 16:55 on Mon 2 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2091/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 2 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 2 Apr
compat-drikpanchangComparison profileMon 2 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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles05:06 → 01:5512:3348 min12:330 min1 Apr
Chicago07:06 → 03:5512:3148 min12:310 min1 Apr
Jersey City08:06 → 04:5512:3748 min12:360 min1 Apr
Port of Spain08:06 → 04:5511:4648 min11:460 min1 Apr
London13:06 → 09:5512:4123 min12:410 min1 Apr
Durban14:06 → 10:5511:360 min11:350 min2 Apr
Dubai16:06 → 12:5511:590 min11:5948 min2 Apr
Delhi17:36 → 14:2512:010 min12:0148 min2 Apr
Kolkata17:36 → 14:2511:170 min11:1748 min2 Apr
Singapore20:06 → 16:5512:450 min12:4448 min2 Apr
Sydney22:06 → 18:5511:350 min11:3548 min2 Apr
Suva00:06 → 20:5511:460 min11:4648 min2 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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