Ruling · Anaṅga Trayodaśī · 1998

Thursday 9 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 598 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 Wednesday 8 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

0 of 48 minutes covered

Midday of Thursday 9 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:56  12:44 madhyāhna ends
11:0811:3211:5612:2012:4413:0813:32

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 22:42 on Wed 8 Apr to 01:14 on Fri 10 Apr.

    1998-04-08T14:42:18Z → 1998-04-09T17:14:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 8th, 11:56–12:44 on the 9th.

    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 8th and 48 of 48 on the 9th.

    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 35869 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1998: Thursday 9 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1998 falls on Thursday 9 April. Trayodaśī runs from 22:42 on Wed 8 Apr to 01:14 on Fri 10 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1998/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 9 Apr
compat-drikpanchangComparison profileThu 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles07:42 → 10:1412:3148 min12:310 min8 Apr
Chicago09:42 → 12:1412:2948 min12:290 min8 Apr
Jersey City10:42 → 13:1412:3548 min12:3440 min8 Apr
Port of Spain10:42 → 13:1411:4448 min11:4448 min8 Apr
London15:42 → 18:1412:390 min12:3948 min9 Apr
Durban16:42 → 19:1411:340 min11:3348 min9 Apr
Dubai18:42 → 21:1411:570 min11:5748 min9 Apr
Delhi20:12 → 22:4411:590 min11:5948 min9 Apr
Kolkata20:12 → 22:4411:150 min11:1448 min9 Apr
Singapore22:42 → 01:1412:430 min12:4248 min9 Apr
Sydney00:42 → 03:1411:330 min11:3348 min9 Apr
Suva02:42 → 05:1411:440 min11:4448 min9 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