Ruling · Yama Dīpadāna · 1919

Tuesday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 284 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Monday 20 October

Trayodaśī is absent from pradoṣa. Not taken.

17:35 sunsetpradoṣa ends 19:18
17:1117:3517:5918:2318:4719:1119:35

0 of 104 minutes covered

Evening of Tuesday 21 October

Taken. The only evening Trayodaśī reaches.

17:33 sunsetpradoṣa ends 19:17
17:0917:3317:5718:2118:4519:0919:33

104 of 104 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 00:02 on Tue 21 Oct to 01:09 on Wed 22 Oct.

    1919-10-20T16:02:10Z → 1919-10-21T17:08:53Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:35–19:18 on the 20th, 17:33–19:17 on the 21st.

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

  3. 03

    Rule

    Trayodaśī must be present during pradoṣa. It covers 0 of 104 minutes on the 20th and 104 of 104 on the 21st.

    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 17036 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1919: Tuesday 21 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1919 falls on Tuesday 21 October. Trayodaśī runs from 00:02 on Tue 21 Oct to 01:09 on Wed 22 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1919/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 21 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 21 Oct
compat-drikpanchangComparison profileTue 21 Oct
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 20thCoveredSunset 21stCoveredRuled
Los Angeles09:02 → 10:0918:14103 min18:120 min20 Oct
Chicago11:02 → 12:0918:03105 min18:010 min20 Oct
Jersey City12:02 → 13:0918:10104 min18:080 min20 Oct
Port of Spain12:02 → 13:0917:4697 min17:460 min20 Oct
London16:02 → 17:0916:59109 min16:5712 min20 Oct
Durban18:02 → 19:0918:0889 min18:0960 min20 Oct
Dubai19:43 → 20:5017:290 min17:28100 min21 Oct
Delhi21:32 → 22:3917:470 min17:46101 min21 Oct
Kolkata21:32 → 22:3917:080 min17:07100 min21 Oct
Singapore23:02 → 00:0917:520 min17:5295 min21 Oct
Sydney02:02 → 03:0918:110 min18:1287 min21 Oct
Suva04:02 → 05:0918:080 min18:0891 min21 Oct
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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