Ruling · Yama Dīpadāna · 1986

Friday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 30 October

Trayodaśī is absent from pradoṣa. Not taken.

17:21 sunsetpradoṣa ends 19:08
16:5717:2117:4518:0918:3318:5719:21

0 of 107 minutes covered

Evening of Friday 31 October

Taken. The only evening Trayodaśī reaches.

17:19 sunsetpradoṣa ends 19:07
Trayodaśī ends 18:53:31
16:5517:1917:4318:0718:3118:5519:19

94 of 107 minutes covered, the first 94

Trayodaśī presentPradoṣa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Trayodaśī runs from 20:28 on Thu 30 Oct to 18:54 on Fri 31 Oct.

    1986-10-30T12:27:31Z → 1986-10-31T10:53:31Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:21–19:08 on the 30th, 17:19–19:07 on the 31st.

    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 107 minutes on the 30th and 94 of 107 on the 31st.

    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 796 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1986: Friday 31 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1986 falls on Friday 31 October. Trayodaśī runs from 20:28 on Thu 30 Oct to 18:54 on Fri 31 Oct and covers 94 of 107 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1986/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 31 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 31 Oct
compat-drikpanchangComparison profileFri 31 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 30thCoveredSunset 31stCoveredRuled
Los Angeles04:28 → 02:5417:02105 min17:010 min30 Oct
Chicago06:28 → 04:5416:47109 min16:460 min30 Oct
Jersey City07:28 → 05:5416:55108 min16:540 min30 Oct
Port of Spain08:28 → 06:5417:4298 min17:420 min30 Oct
London12:28 → 10:5416:37114 min16:360 min30 Oct
Durban14:28 → 12:5418:1686 min18:170 min30 Oct
Dubai16:28 → 14:5417:40102 min17:390 min30 Oct
Delhi17:58 → 16:2417:3883 min17:370 min30 Oct
Kolkata17:58 → 16:2417:0044 min17:000 min30 Oct
Singapore20:28 → 18:5418:500 min18:503 min31 Oct
Sydney23:28 → 21:5419:210 min19:2185 min31 Oct
Suva00:28 → 22:5418:120 min18:1290 min31 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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