Ruling · Yama Dīpadāna · 1950

Tuesday 7 November

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 03 s away. 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 7 November

Taken. The only evening Trayodaśī reaches.

17:12 sunsetpradoṣa ends 19:01
Trayodaśī begins 17:16:08
16:4817:1217:3618:0018:2418:4819:12

105 of 109 minutes covered, the last 105

Evening of Wednesday 8 November

Trayodaśī is absent from pradoṣa. Not taken.

17:11 sunsetpradoṣa ends 19:01
16:4717:1117:3517:5918:2318:4719:11

0 of 110 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 17:16 on Tue 7 Nov to 14:26 on Wed 8 Nov.

    1950-11-07T09:16:08Z → 1950-11-08T06:25:49Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:12–19:01 on the 7th, 17:11–19:01 on the 8th.

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

  3. 03

    Rule

    Trayodaśī must be present during pradoṣa. It covers 105 of 109 minutes on the 7th and 0 of 110 on the 8th.

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

  4. 04

    Tie-break

    Only one evening qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 243 s < 300 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1950: Tuesday 7 November.

    confidence: boundary (margin)

Say it like this

In Baoding, Yama Dīpadāna 1950 falls on Tuesday 7 November. Trayodaśī runs from 17:16 on Tue 7 Nov to 14:26 on Wed 8 Nov and covers 105 of 109 minutes of pradoṣa that evening. It is 4 min 03 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1950/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 7 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 7 Nov
compat-drikpanchangComparison profileTue 7 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 7thCoveredSunset 8thCoveredRuled
Los Angeles01:16 → 22:2616:55107 min16:540 min7 Nov
Chicago03:16 → 00:2616:38111 min16:370 min7 Nov
Jersey City04:16 → 01:2616:46110 min16:450 min7 Nov
Port of Spain05:16 → 02:2617:4099 min17:400 min7 Nov
London09:16 → 06:2616:24118 min16:220 min7 Nov
Durban11:16 → 08:2618:2285 min18:230 min7 Nov
Dubai13:16 → 10:2617:35103 min17:340 min7 Nov
Delhi14:46 → 11:5617:32105 min17:310 min7 Nov
Kolkata14:46 → 11:5616:56102 min16:560 min7 Nov
Singapore16:46 → 13:5618:2096 min18:200 min7 Nov
Sydney19:16 → 16:2618:2834 min18:290 min7 Nov
Suva21:16 → 18:2618:150 min18:1610 min8 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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