Ruling · Anaṅga Trayodaśī · 2008

Friday 18 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 78 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 17 April

Trayodaśī is absent from madhyāhna. Not taken.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

0 of 48 minutes covered

Midday of Friday 18 April

Taken. The only midday Trayodaśī reaches.

madhyāhna begins 11:54  12:42 madhyāhna ends
11:0611:3011:5412:1812:4213:0613:30

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 14:00 on Thu 17 Apr to 15:09 on Fri 18 Apr.

    2008-04-17T05:59:45Z → 2008-04-18T07:08:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 17th, 11:54–12:42 on the 18th.

    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 17th and 48 of 48 on the 18th.

    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 4662 s

  5. 05

    Ruling

    Anaṅga Trayodaśī, Baoding, 2008: Friday 18 April.

    confidence: determinate

Say it like this

In Baoding, Anaṅga Trayodaśī 2008 falls on Friday 18 April. Trayodaśī runs from 14:00 on Thu 17 Apr to 15:09 on Fri 18 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2008/ananga-trayodashi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Apr
Ahargaṇa, classicalDisc centre, no refractionFri 18 Apr
compat-drikpanchangComparison profileFri 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles23:00 → 00:0912:2948 min12:280 min17 Apr
Chicago01:00 → 02:0912:2648 min12:260 min17 Apr
Jersey City02:00 → 03:0912:3248 min12:320 min17 Apr
Port of Spain02:00 → 03:0911:4248 min11:410 min17 Apr
London07:00 → 08:0912:3748 min12:360 min17 Apr
Durban08:00 → 09:0911:3148 min11:310 min17 Apr
Dubai10:00 → 11:0911:5448 min11:540 min17 Apr
Delhi11:30 → 12:3911:5748 min11:5742 min17 Apr
Kolkata11:30 → 12:3911:1231 min11:1248 min17 Apr
Singapore14:00 → 15:0912:400 min12:4048 min18 Apr
Sydney16:00 → 17:0911:310 min11:3048 min18 Apr
Suva18:00 → 19:0911:420 min11:4248 min18 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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