Ruling · Anaṅga Trayodaśī · 1978

Friday 21 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 149 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 20 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

0 of 48 minutes covered

Midday of Friday 21 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:53  12:41 madhyāhna ends
11:0511:2911:5312:1712:4113:0513:29

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 15:42 on Thu 20 Apr to 15:10 on Fri 21 Apr.

    1978-04-20T07:42:02Z → 1978-04-21T07:09:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:53–12:41 on the 20th, 11:53–12:41 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 8923 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1978: Friday 21 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1978 falls on Friday 21 April. Trayodaśī runs from 15:42 on Thu 20 Apr to 15:10 on Fri 21 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1978/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 21 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 21 Apr
compat-drikpanchangComparison profileFri 21 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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles23:42 → 23:1011:2848 min11:280 min20 Apr
Chicago01:42 → 01:1011:2648 min11:260 min20 Apr
Jersey City02:42 → 02:1011:3248 min11:310 min20 Apr
Port of Spain03:42 → 03:1011:4148 min11:410 min20 Apr
London08:42 → 08:1012:3648 min12:360 min20 Apr
Durban09:42 → 09:1011:3148 min11:300 min20 Apr
Dubai11:42 → 11:1011:5448 min11:540 min20 Apr
Delhi13:12 → 12:4011:560 min11:5644 min21 Apr
Kolkata13:12 → 12:4011:120 min11:1148 min21 Apr
Singapore15:12 → 14:4012:100 min12:0948 min21 Apr
Sydney17:42 → 17:1011:300 min11:3048 min21 Apr
Suva19:42 → 19:1011:410 min11:4148 min21 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