Ruling · Yama Tarpaṇa · 2042

Tuesday 21 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 13 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 20 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:33
05:1605:4006:0406:2806:5207:1607:4008:04

0 of 113 minutes covered

Dawn of Tuesday 21 January

Taken. The only dawn Caturdaśī reaches.

05:40 aruṇodaya beginssunrise 07:33
Caturdaśī ends 07:19:41
05:1605:4006:0406:2806:5207:1607:4008:04

100 of 113 minutes covered, the first 100

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

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 09:26 on Mon 20 Jan to 07:20 on Tue 21 Jan.

    2042-01-20T01:26:27Z → 2042-01-20T23:19:41Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:33 on the 20th, 05:40–07:33 on the 21st.

    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 113 minutes on the 20th and 100 of 113 on the 21st.

    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 789 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2042: Tuesday 21 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2042 falls on Tuesday 21 January. Caturdaśī runs from 09:26 on Mon 20 Jan to 07:20 on Tue 21 Jan and covers 100 of 113 minutes of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2042/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 21 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 21 Jan
compat-drikpanchangComparison profileTue 21 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 20thCoveredAruṇodaya 21stCoveredRuled
Los Angeles17:26 → 15:2005:07110 min05:060 min20 Jan
Chicago19:26 → 17:2005:18115 min05:180 min20 Jan
Jersey City20:26 → 18:2005:22114 min05:210 min20 Jan
Port of Spain21:26 → 19:2004:5099 min04:500 min20 Jan
London01:26 → 23:2005:51124 min05:500 min20 Jan
Durban03:26 → 01:2003:5282 min03:530 min20 Jan
Dubai05:26 → 03:2005:2099 min05:200 min20 Jan
Delhi06:56 → 04:5005:2718 min05:270 min20 Jan
Kolkata06:56 → 04:5004:340 min04:3415 min21 Jan
Singapore09:26 → 07:2005:380 min05:3996 min21 Jan
Sydney12:26 → 10:2004:450 min04:4680 min21 Jan
Suva13:26 → 11:2004:180 min04:1988 min21 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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