Ruling · Yama Dīpadāna · 1926

Wednesday 3 November

Boundaryin Baoding, under the Rashtriya Panchang method. Both evenings qualify and the rule does not say which to take. Say “contested”.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Tuesday 2 November

Qualifies with 76 of 108 minutes. Not taken.

17:18 sunsetpradoṣa ends 19:06
Trayodaśī begins 17:49:13
16:5417:1817:4218:0618:3018:5419:18

76 of 108 minutes covered, the last 76

Evening of Wednesday 3 November

Taken. Both evenings qualify; the rule is silent, and this one is covered longer.

17:17 sunsetpradoṣa ends 19:05
16:5317:1717:4118:0518:2918:5319:17

108 of 108 minutes covered

Trayodaśī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Trayodaśī runs from 17:49 on Tue 2 Nov to 19:49 on Wed 3 Nov.

    1926-11-02T09:49:14Z → 1926-11-03T11:48:54Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:18–19:06 on the 2nd, 17:17–19:05 on the 3rd.

    pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Trayodaśī must be present during pradoṣa. It covers 76 of 108 minutes on the 2nd and 108 of 108 on the 3rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 1894 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1926: Wednesday 3 November.

    confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Yama Dīpadāna 1926 falls on Wednesday 3 November. Trayodaśī runs from 17:49 on Tue 2 Nov to 19:49 on Wed 3 Nov and covers all of pradoṣa that evening. It also reaches the previous evening for 76 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/baoding/festivals/1926/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 3 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 3 Nov
compat-drikpanchangComparison profileWed 3 Nov
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/yama-dipadana · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Trayodaśī
Kāla
Pradoṣa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“K 13 Yama dipadana (pradosa).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceTrayodaśīSunset 2ndCoveredSunset 3rdCoveredRuled
Los Angeles01:49 → 03:4917:00106 min16:590 min2 Nov
Chicago03:49 → 05:4916:44109 min16:430 min2 Nov
Jersey City04:49 → 06:4916:52109 min16:510 min2 Nov
Port of Spain05:49 → 07:4917:4298 min17:410 min2 Nov
London09:49 → 11:4916:33115 min16:310 min2 Nov
Durban11:49 → 13:4918:1886 min18:190 min2 Nov
Dubai13:49 → 15:4917:38103 min17:370 min2 Nov
Delhi15:19 → 17:1917:36104 min17:350 min2 Nov
Kolkata15:19 → 17:1916:59102 min16:5821 min2 Nov
Singapore16:49 → 18:4917:5095 min17:5059 min2 Nov
Sydney19:49 → 21:4918:230 min18:2484 min3 Nov
Suva21:49 → 23:4918:130 min18:1390 min3 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
yama-dipadana@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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