Ruling · Yama Tarpaṇa · 1969

Friday 17 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 537 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 16 January

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 114 minutes covered

Dawn of Friday 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 20:09 on Thu 16 Jan to 16:32 on Fri 17 Jan.

    1969-01-16T12:08:42Z → 1969-01-17T08:31:36Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:35 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 32192 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1969: Friday 17 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1969 falls on Friday 17 January. Caturdaśī runs from 20:09 on Thu 16 Jan to 16:32 on Fri 17 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1969/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 17 Jan
compat-drikpanchangComparison profileFri 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 Angeles04:09 → 00:3205:08111 min05:070 min16 Jan
Chicago06:09 → 02:3205:2067 min05:190 min16 Jan
Jersey City07:09 → 03:3205:2310 min05:230 min16 Jan
Port of Spain08:09 → 04:3204:490 min04:500 min16 Jan
London13:09 → 09:3206:540 min06:54125 min17 Jan
Durban14:09 → 10:3203:490 min03:5082 min17 Jan
Dubai16:09 → 12:3205:200 min05:20106 min17 Jan
Delhi17:39 → 14:0205:270 min05:27108 min17 Jan
Kolkata17:39 → 14:0204:340 min04:34105 min17 Jan
Singapore19:39 → 16:0205:070 min05:0896 min17 Jan
Sydney22:09 → 18:3203:420 min03:4379 min17 Jan
Suva00:09 → 20:3204:160 min04:1787 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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