Ruling · Yama Tarpaṇa · 1950

Tuesday 17 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 587 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two dawns

One ghaṭī is 24 minutes. Aruṇodaya is 2 muhūrtas before sunrise.

Dawn of Monday 16 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:41 aruṇodaya beginssunrise 07:36
05:1705:4106:0506:2906:5307:1707:4108:05

0 of 114 minutes covered

Dawn of Tuesday 17 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:35
05:1705:4106:0506:2906:5307:1707:4108:05

114 of 114 minutes covered

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 19:07 on Mon 16 Jan to 17:22 on Tue 17 Jan.

    1950-01-16T11:06:44Z → 1950-01-17T09:21:51Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:36 on the 16th, 05:41–07:35 on the 17th.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 0 of 114 minutes on the 16th and 114 of 114 on the 17th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Only one dawn qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 35195 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1950: Tuesday 17 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1950 falls on Tuesday 17 January. Caturdaśī runs from 19:07 on Mon 16 Jan to 17:22 on Tue 17 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1950/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 17 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 17 Jan
compat-drikpanchangComparison profileTue 17 Jan
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-tarpana · ruleset 2026.3-draft

Month
Pauṣa, amānta
Pakṣa · aṅga
Kṛṣṇa · Caturdaśī
Kāla
Aruṇodaya
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 105

“K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturdaśīAruṇodaya 16thCoveredAruṇodaya 17thCoveredRuled
Los Angeles03:07 → 01:2205:08111 min05:080 min16 Jan
Chicago05:07 → 03:2205:20116 min05:190 min16 Jan
Jersey City06:07 → 04:2205:2372 min05:230 min16 Jan
Port of Spain07:07 → 05:2204:490 min04:5032 min17 Jan
London11:07 → 09:2205:540 min05:54125 min17 Jan
Durban13:07 → 11:2203:490 min03:5081 min17 Jan
Dubai15:07 → 13:2205:200 min05:20106 min17 Jan
Delhi16:37 → 14:5205:270 min05:27108 min17 Jan
Kolkata16:37 → 14:5204:340 min04:34105 min17 Jan
Singapore18:37 → 16:5205:070 min05:0796 min17 Jan
Sydney21:07 → 19:2203:420 min03:4279 min17 Jan
Suva23:07 → 21:2204:160 min04:1687 min17 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
yama-tarpana@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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