Ruling · Anaṅga Trayodaśī · 1900

Thursday 12 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 416 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 Thursday 12 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

48 of 48 minutes covered

Midday of Friday 13 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 12:00  12:48 madhyāhna ends
11:1211:3612:0012:2412:4813:1213:36

0 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 02:42 on Thu 12 Apr to 05:04 on Fri 13 Apr.

    1900-04-11T18:36:56Z → 1900-04-12T20:59:06Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 12th, 12:00–12:48 on the 13th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 12th and 0 of 48 on the 13th.

    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 24966 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1900: Thursday 12 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1900 falls on Thursday 12 April. Trayodaśī runs from 02:42 on Thu 12 Apr to 05:04 on Fri 13 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1900/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 12 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 12 Apr
compat-drikpanchangComparison profileThu 12 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles10:37 → 12:5911:3048 min11:3048 min11 Apr
Chicago12:37 → 14:5911:280 min11:2848 min12 Apr
Jersey City13:37 → 15:5911:340 min11:3348 min12 Apr
Port of Spain14:37 → 16:5911:430 min11:4348 min12 Apr
London18:37 → 20:5911:380 min11:3848 min12 Apr
Durban20:07 → 22:2911:030 min11:0348 min12 Apr
Dubai22:18 → 00:4011:370 min11:3748 min12 Apr
Delhi23:58 → 02:2011:500 min11:4948 min12 Apr
Kolkata23:58 → 02:2011:050 min11:0548 min12 Apr
Singapore01:32 → 03:5411:370 min11:3748 min12 Apr
Sydney04:37 → 06:5911:320 min11:3248 min12 Apr
Suva06:32 → 08:5411:380 min11:3848 min12 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