Ruling · Yama Tarpaṇa · 1942

Friday 16 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 55 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 Thursday 15 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:42 aruṇodaya beginssunrise 07:36
05:1805:4206:0606:3006:5407:1807:4208:06

0 of 114 minutes covered

Dawn of Friday 16 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:36
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 11:43 on Thu 15 Jan to 08:31 on Fri 16 Jan.

    1942-01-15T03:42:40Z → 1942-01-16T00:31:02Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:42–07:36 on the 15th, 05:41–07:36 on the 16th.

    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 15th and 114 of 114 on the 16th.

    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 3322 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1942: Friday 16 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1942 falls on Friday 16 January. Caturdaśī runs from 11:43 on Thu 15 Jan to 08:31 on Fri 16 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1942/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 16 Jan
compat-drikpanchangComparison profileFri 16 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 15thCoveredAruṇodaya 16thCoveredRuled
Los Angeles19:43 → 16:3105:08111 min05:080 min15 Jan
Chicago21:43 → 18:3105:20116 min05:200 min15 Jan
Jersey City22:43 → 19:3105:23116 min05:230 min15 Jan
Port of Spain23:43 → 20:3104:49100 min04:490 min15 Jan
London04:43 → 01:3106:55126 min06:540 min15 Jan
Durban05:43 → 02:3103:480 min03:490 min15 Jan
Dubai07:43 → 04:3105:200 min05:200 min15 Jan
Delhi10:13 → 07:0106:270 min06:2734 min16 Jan
Kolkata10:13 → 07:0105:340 min05:3487 min16 Jan
Singapore11:13 → 08:0105:070 min05:0796 min16 Jan
Sydney14:43 → 11:3104:410 min04:4179 min16 Jan
Suva15:43 → 12:3104:150 min04:1687 min16 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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