Ruling · Yama Dīpadāna · 2087

Thursday 23 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 126 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 Thursday 23 October

Taken. The only evening Trayodaśī reaches.

17:29 sunsetpradoṣa ends 19:14
17:0517:2917:5318:1718:4119:0519:29

105 of 105 minutes covered

Evening of Friday 24 October

Trayodaśī is absent from pradoṣa. Not taken.

17:28 sunsetpradoṣa ends 19:13
17:0417:2817:5218:1618:4019:0419:28

0 of 105 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 13:51 on Thu 23 Oct to 15:21 on Fri 24 Oct.

    2087-10-23T05:51:30Z → 2087-10-24T07:21:25Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:29–19:14 on the 23rd, 17:28–19:13 on the 24th.

    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 105 minutes on the 23rd and 0 of 105 on the 24th.

    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 7574 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 2087: Thursday 23 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 2087 falls on Thursday 23 October. Trayodaśī runs from 13:51 on Thu 23 Oct to 15:21 on Fri 24 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/2087/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 23 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 23 Oct
compat-drikpanchangComparison profileThu 23 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 23rdCoveredSunset 24thCoveredRuled
Los Angeles22:51 → 00:2118:09104 min18:080 min23 Oct
Chicago00:51 → 02:2117:57106 min17:550 min23 Oct
Jersey City01:51 → 03:2118:04106 min18:030 min23 Oct
Port of Spain01:51 → 03:2117:4598 min17:440 min23 Oct
London06:51 → 08:2117:50111 min17:480 min23 Oct
Durban07:51 → 09:2118:1188 min18:120 min23 Oct
Dubai09:51 → 11:2117:45101 min17:440 min23 Oct
Delhi11:21 → 12:5117:44102 min17:430 min23 Oct
Kolkata11:21 → 12:5117:05100 min17:040 min23 Oct
Singapore13:51 → 15:2118:5195 min18:510 min23 Oct
Sydney16:51 → 18:2119:1587 min19:160 min23 Oct
Suva17:51 → 19:2118:1091 min18:1072 min23 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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