Ruling · Yama Dīpadāna · 1903

Sunday 18 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 472 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

Trayodaśī is absent from pradoṣa. Not taken.

17:39 sunsetpradoṣa ends 19:22
17:1517:3918:0318:2718:5119:1519:39

0 of 103 minutes covered

Evening of Sunday 18 October

Taken. The only evening Trayodaśī reaches.

17:37 sunsetpradoṣa ends 19:21
17:1317:3718:0118:2518:4919:1319:37

103 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 05:27 on Sun 18 Oct to 03:12 on Mon 19 Oct.

    1903-10-17T21:26:45Z → 1903-10-18T19:12:17Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:39–19:22 on the 17th, 17:37–19:21 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 0 of 103 minutes on the 17th and 103 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 28306 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1903: Sunday 18 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1903 falls on Sunday 18 October. Trayodaśī runs from 05:27 on Sun 18 Oct to 03:12 on Mon 19 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1903/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 18 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 18 Oct
compat-drikpanchangComparison profileSun 18 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 Angeles13:27 → 11:1217:17102 min17:160 min17 Oct
Chicago15:27 → 13:1217:07104 min17:060 min17 Oct
Jersey City16:27 → 14:1217:14103 min17:130 min17 Oct
Port of Spain17:27 → 15:1217:4897 min17:470 min17 Oct
London21:27 → 19:1217:050 min17:03108 min18 Oct
Durban23:27 → 21:1218:060 min18:0789 min18 Oct
Dubai01:08 → 22:5317:320 min17:31100 min18 Oct
Delhi02:48 → 00:3317:420 min17:41101 min18 Oct
Kolkata02:48 → 00:3317:020 min17:0199 min18 Oct
Singapore04:22 → 02:0717:480 min17:4795 min18 Oct
Sydney07:27 → 05:1218:090 min18:0988 min18 Oct
Suva09:22 → 07:0718:020 min18:0292 min18 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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