Ruling · Yama Dīpadāna · 1900

Saturday 20 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 63 minutes.

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 Saturday 20 October

Taken. The only evening Trayodaśī reaches.

17:39 sunsetpradoṣa ends 19:23
17:1517:3918:0318:2718:5119:1519:39

104 of 104 minutes covered

Evening of Sunday 21 October

Trayodaśī is absent from pradoṣa. Not taken.

17:37 sunsetpradoṣa ends 19:22
17:1317:3718:0118:2518:4919:1319:37

0 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 14:02 on Sat 20 Oct to 16:34 on Sun 21 Oct.

    1900-10-20T05:56:50Z → 1900-10-21T08:29:28Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:39–19:23 on the 20th, 17:37–19:22 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 104 of 104 minutes on the 20th and 0 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 3771 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1900: Saturday 20 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1900 falls on Saturday 20 October. Trayodaśī runs from 14:02 on Sat 20 Oct to 16:34 on Sun 21 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1900/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 20 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 20 Oct
compat-drikpanchangComparison profileSat 20 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 Angeles21:57 → 00:2917:13103 min17:120 min20 Oct
Chicago23:57 → 02:2917:02105 min17:000 min20 Oct
Jersey City00:57 → 03:2917:09105 min17:070 min20 Oct
Port of Spain01:57 → 04:2917:4697 min17:460 min20 Oct
London05:57 → 08:2916:57109 min16:550 min20 Oct
Durban07:27 → 09:5917:3889 min17:390 min20 Oct
Dubai09:38 → 12:1017:29100 min17:280 min20 Oct
Delhi11:18 → 13:5017:38101 min17:370 min20 Oct
Kolkata11:18 → 13:5016:59100 min16:580 min20 Oct
Singapore12:52 → 15:2417:4795 min17:470 min20 Oct
Sydney15:57 → 18:2918:1287 min18:1317 min20 Oct
Suva17:52 → 20:2418:0391 min18:0391 min20 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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