Ruling · Yama Dīpadāna · 1998

Saturday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 259 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 Saturday 17 October

Taken. The only evening Trayodaśī reaches.

17:38 sunsetpradoṣa ends 19:21
17:1417:3818:0218:2618:5019:1419:38

103 of 103 minutes covered

Evening of Sunday 18 October

Trayodaśī is absent from pradoṣa. Not taken.

17:36 sunsetpradoṣa ends 19:19
17:1217:3618:0018:2418:4819:1219:36

0 of 103 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 11:08 on Sat 17 Oct to 13:18 on Sun 18 Oct.

    1998-10-17T03:07:48Z → 1998-10-18T05:17:34Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:38–19:21 on the 17th, 17:36–19:19 on the 18th.

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

  3. 03

    Rule

    Trayodaśī must be present during pradoṣa. It covers 103 of 103 minutes on the 17th and 0 of 103 on the 18th.

    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 15513 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1998: Saturday 17 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1998 falls on Saturday 17 October. Trayodaśī runs from 11:08 on Sat 17 Oct to 13:18 on Sun 18 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1998/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 17 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 17 Oct
compat-drikpanchangComparison profileSat 17 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 17thCoveredSunset 18thCoveredRuled
Los Angeles20:08 → 22:1818:16102 min18:150 min17 Oct
Chicago22:08 → 00:1818:06104 min18:040 min17 Oct
Jersey City23:08 → 01:1818:13104 min18:110 min17 Oct
Port of Spain23:08 → 01:1817:4797 min17:470 min17 Oct
London04:08 → 06:1818:03107 min18:010 min17 Oct
Durban05:08 → 07:1818:0789 min18:070 min17 Oct
Dubai07:08 → 09:1817:50100 min17:490 min17 Oct
Delhi08:38 → 10:4817:50101 min17:490 min17 Oct
Kolkata08:38 → 10:4817:1099 min17:090 min17 Oct
Singapore11:08 → 13:1818:5295 min18:520 min17 Oct
Sydney13:08 → 15:1818:0988 min18:100 min17 Oct
Suva15:08 → 17:1818:0792 min18:080 min17 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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