Ruling · Yama Dīpadāna · 1957

Monday 21 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 7 min 30 s.

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 20 October

Trayodaśī is absent from pradoṣa. Not taken.

17:33 sunsetpradoṣa ends 19:17
17:0917:3317:5718:2118:4519:0919:33

0 of 104 minutes covered

Evening of Monday 21 October

Taken. The only evening Trayodaśī reaches.

17:32 sunsetpradoṣa ends 19:16
Trayodaśī ends 19:08:50
17:0817:3217:5618:2018:4419:0819:32

97 of 104 minutes covered, the first 97

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

How it was decided

  1. 01

    Aṅga

    Trayodaśī runs from 22:26 on Sun 20 Oct to 19:09 on Mon 21 Oct.

    1957-10-20T14:26:28Z → 1957-10-21T11:08:51Z

  2. 02

    Kāla

    Pradoṣa is 2 muhūrtas after sunset: 17:33–19:17 on the 20th, 17:32–19:16 on the 21st.

    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 104 minutes on the 20th and 97 of 104 on the 21st.

    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 450 s

  5. 05

    Ruling

    Yama Dīpadāna, Baoding, 1957: Monday 21 October.

    confidence: determinate

Say it like this

In Baoding, Yama Dīpadāna 1957 falls on Monday 21 October. Trayodaśī runs from 22:26 on Sun 20 Oct to 19:09 on Mon 21 Oct and covers 97 of 104 minutes of pradoṣa that evening.

ahargana.org/baoding/festivals/1957/yama-dipadana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 21 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 21 Oct
compat-drikpanchangComparison profileMon 21 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 20thCoveredSunset 21stCoveredRuled
Los Angeles06:26 → 03:0917:13103 min17:120 min20 Oct
Chicago09:26 → 06:0918:01105 min18:000 min20 Oct
Jersey City10:26 → 07:0918:09105 min18:070 min20 Oct
Port of Spain10:26 → 07:0917:4697 min17:460 min20 Oct
London14:26 → 11:0916:57109 min16:550 min20 Oct
Durban16:26 → 13:0918:0988 min18:090 min20 Oct
Dubai18:26 → 15:0917:4761 min17:470 min20 Oct
Delhi19:56 → 16:3917:470 min17:460 min20 Oct
Kolkata19:56 → 16:3917:070 min17:070 min20 Oct
Singapore21:56 → 18:3918:220 min18:2217 min21 Oct
Sydney00:26 → 21:0918:120 min18:1387 min21 Oct
Suva02:26 → 23:0918:080 min18:0891 min21 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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