Ruling · Yama Dīpadāna · 1908

Thursday 22 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 263 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two evenings

One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.

Evening of Thursday 22 October

Taken. The only evening Trayodaśī reaches.

16:42 sunsetpradoṣa ends 18:30
16:1816:4217:0617:3017:5418:1818:42

107 of 107 minutes covered

Evening of Friday 23 October

Trayodaśī is absent from pradoṣa. Not taken.

16:40 sunsetpradoṣa ends 18:28
16:1616:4017:0417:2817:5218:1618:40

0 of 108 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 10:24 on Thu 22 Oct to 12:17 on Fri 23 Oct.

    1908-10-22T02:23:40Z → 1908-10-23T04:17:05Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 16:42–18:30 on the 22nd, 16:40–18:28 on the 23rd.

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

  3. 03

    Rule

    Trayodaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 22nd and 0 of 108 on the 23rd.

    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 15795 s

  5. 05

    Ruling

    Yama Dīpadāna, Daqing, 1908: Thursday 22 October.

    confidence: determinate

Say it like this

In Daqing, Yama Dīpadāna 1908 falls on Thursday 22 October. Trayodaśī runs from 10:24 on Thu 22 Oct to 12:17 on Fri 23 Oct and covers all of pradoṣa that evening.

ahargana.org/daqing/festivals/1908/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 22 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 22 Oct
compat-drikpanchangComparison profileThu 22 Oct
No institution has a recorded ruling for Daqing.

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 22ndCoveredSunset 23rdCoveredRuled
Los Angeles18:24 → 20:1717:11103 min17:090 min22 Oct
Chicago20:24 → 22:1716:59106 min16:570 min22 Oct
Jersey City21:24 → 23:1717:06105 min17:050 min22 Oct
Port of Spain22:24 → 00:1717:4597 min17:450 min22 Oct
London02:24 → 04:1716:53110 min16:510 min22 Oct
Durban04:24 → 06:1718:1088 min18:110 min22 Oct
Dubai06:05 → 07:5817:27101 min17:260 min22 Oct
Delhi07:54 → 09:4717:45102 min17:440 min22 Oct
Kolkata07:54 → 09:4717:06100 min17:050 min22 Oct
Singapore09:24 → 11:1717:5195 min17:510 min22 Oct
Sydney12:24 → 14:1718:1387 min18:140 min22 Oct
Suva14:19 → 16:1218:0491 min18:040 min22 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

About Ahargaṇa