Ruling · Yama Dīpadāna · 1981

Sunday 25 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 262 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 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

Evening of Sunday 25 October

Taken. The only evening Trayodaśī reaches.

17:27 sunsetpradoṣa ends 19:12
17:0317:2717:5118:1518:3919:0319:27

106 of 106 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 23:35 on Sat 24 Oct to 00:47 on Mon 26 Oct.

    1981-10-24T15:35:17Z → 1981-10-25T16:47:13Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:28–19:13 on the 24th, 17:27–19:12 on the 25th.

    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 105 minutes on the 24th and 106 of 106 on the 25th.

    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 15731 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1981: Sunday 25 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1981 falls on Sunday 25 October. Trayodaśī runs from 23:35 on Sat 24 Oct to 00:47 on Mon 26 Oct and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1981/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 25 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 25 Oct
compat-drikpanchangComparison profileSun 25 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 24thCoveredSunset 25thCoveredRuled
Los Angeles08:35 → 08:4718:08104 min17:070 min24 Oct
Chicago10:35 → 10:4717:55107 min16:540 min24 Oct
Jersey City11:35 → 11:4718:03106 min17:010 min24 Oct
Port of Spain11:35 → 12:4717:4498 min17:440 min24 Oct
London16:35 → 16:4717:49111 min16:471 min24 Oct
Durban17:35 → 18:4718:1288 min18:1235 min24 Oct
Dubai19:35 → 20:4717:440 min17:43101 min25 Oct
Delhi21:05 → 22:1717:430 min17:42102 min25 Oct
Kolkata21:05 → 22:1717:040 min17:04101 min25 Oct
Singapore23:05 → 00:1718:210 min18:2195 min25 Oct
Sydney01:35 → 03:4718:150 min19:1686 min25 Oct
Suva03:35 → 04:4718:100 min18:1091 min25 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