Ruling · Anaṅga Trayodaśī · 1950

Saturday 1 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 47 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 Friday 31 March

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 Saturday 1 April

Taken. Trayodaśī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:59  12:47 madhyāhna ends
Trayodaśī ends 11:11:42
11:1111:3511:5912:2312:4713:1113:35

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 13:43 on Fri 31 Mar to 11:12 on Sat 1 Apr.

    1950-03-31T05:42:33Z → 1950-04-01T03:11:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 31st, 11:59–12:47 on the 1st.

    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 31st and 0 of 48 on the 1st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 2815 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 1950: Saturday 1 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 1950 falls on Saturday 1 April. Trayodaśī runs from 13:43 on Fri 31 Mar to 11:12 on Sat 1 Apr, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1950/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 1 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 1 Apr
compat-drikpanchangComparison profileSat 1 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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles21:43 → 19:1211:3448 min11:330 min31 Mar
Chicago23:43 → 21:1211:3148 min11:310 min31 Mar
Jersey City00:43 → 22:1211:3748 min11:370 min31 Mar
Port of Spain01:43 → 23:1211:4648 min11:460 min31 Mar
London05:43 → 03:1211:4148 min11:410 min31 Mar
Durban07:43 → 05:1211:3648 min11:360 min31 Mar
Dubai09:43 → 07:1211:5948 min11:590 min31 Mar
Delhi11:13 → 08:4212:0248 min12:010 min31 Mar
Kolkata11:13 → 08:4211:1748 min11:170 min31 Mar
Singapore13:13 → 10:4212:150 min12:150 min1 Apr
Sydney15:43 → 13:1211:350 min11:3548 min1 Apr
Suva17:43 → 15:1211:470 min11:4648 min1 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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