Ruling · Yama Dīpadāna · 1937

Sunday 31 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 501 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 Sunday 31 October

Taken. The only evening Trayodaśī reaches.

17:20 sunsetpradoṣa ends 19:07
16:5617:2017:4418:0818:3218:5619:20

107 of 107 minutes covered

Evening of Monday 1 November

Trayodaśī is absent from pradoṣa. Not taken.

17:18 sunsetpradoṣa ends 19:06
16:5417:1817:4218:0618:3018:5419:18

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 07:58 on Sun 31 Oct to 08:58 on Mon 1 Nov.

    1937-10-30T23:57:49Z → 1937-11-01T00:57:38Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:20–19:07 on the 31st, 17:18–19:06 on the 1st.

    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 31st and 0 of 108 on the 1st.

    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 30046 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1937: Sunday 31 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1937 falls on Sunday 31 October. Trayodaśī runs from 07:58 on Sun 31 Oct to 08:58 on Mon 1 Nov and covers all of pradoṣa that evening.

ahargana.org/baoding/festivals/1937/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 31 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 31 Oct
compat-drikpanchangComparison profileSun 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 1stCoveredRuled
Los Angeles15:58 → 16:5817:02105 min17:000 min30 Oct
Chicago17:58 → 18:5816:4838 min16:450 min31 Oct
Jersey City18:58 → 19:5816:550 min16:530 min31 Oct
Port of Spain19:58 → 20:5817:420 min17:420 min31 Oct
London23:58 → 00:5816:380 min16:340 min31 Oct
Durban01:58 → 02:5818:160 min18:170 min31 Oct
Dubai03:58 → 04:5817:400 min17:380 min31 Oct
Delhi05:28 → 06:2817:380 min17:360 min31 Oct
Kolkata05:28 → 06:2817:000 min16:590 min31 Oct
Singapore07:18 → 08:1818:100 min18:100 min31 Oct
Sydney09:58 → 10:5818:200 min18:220 min31 Oct
Suva11:58 → 12:5818:120 min18:130 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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