Ruling · Anaṅga Trayodaśī · 1979

Tuesday 10 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 Monday 9 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 Tuesday 10 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 16:53 on Mon 9 Apr to 18:50 on Tue 10 Apr.

    1979-04-09T08:52:52Z → 1979-04-10T10:50:24Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 9th, 11:56–12:44 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 14913 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1979: Tuesday 10 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1979 falls on Tuesday 10 April. Trayodaśī runs from 16:53 on Mon 9 Apr to 18:50 on Tue 10 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1979/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 10 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 10 Apr
compat-drikpanchangComparison profileTue 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles00:53 → 02:5011:3148 min11:310 min9 Apr
Chicago02:53 → 04:5011:2948 min11:280 min9 Apr
Jersey City03:53 → 05:5011:3448 min11:340 min9 Apr
Port of Spain04:53 → 06:5011:4448 min11:440 min9 Apr
London09:53 → 11:5012:3948 min12:390 min9 Apr
Durban10:53 → 12:5011:3348 min11:3348 min9 Apr
Dubai12:53 → 14:5011:570 min11:5648 min10 Apr
Delhi14:23 → 16:2011:590 min11:5948 min10 Apr
Kolkata14:23 → 16:2011:150 min11:1448 min10 Apr
Singapore16:23 → 18:2012:120 min12:1248 min10 Apr
Sydney18:53 → 20:5011:330 min11:3348 min10 Apr
Suva20:53 → 22:5011:440 min11:4448 min10 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