Ruling · Yama Tarpaṇa · 2050

Saturday 22 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 547 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 Friday 21 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 Saturday 22 January

Taken. The only dawn Caturdaśī reaches.

05:39 aruṇodaya beginssunrise 07:32
05:1505:3906:0306:2706:5107:1507:3908:03

113 of 113 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 20:01 on Fri 21 Jan to 16:39 on Sat 22 Jan.

    2050-01-21T12:00:45Z → 2050-01-22T08:38:59Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:33 on the 21st, 05:39–07:32 on the 22nd.

    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 21st and 113 of 113 on the 22nd.

    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 32806 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2050: Saturday 22 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2050 falls on Saturday 22 January. Caturdaśī runs from 20:01 on Fri 21 Jan to 16:39 on Sat 22 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2050/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 22 Jan
Ahargaṇa, classicalDisc centre, no refractionSat 22 Jan
compat-drikpanchangComparison profileSat 22 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 21stCoveredAruṇodaya 22ndCoveredRuled
Los Angeles04:01 → 00:3905:06110 min05:060 min21 Jan
Chicago06:01 → 02:3905:1872 min05:170 min21 Jan
Jersey City07:01 → 03:3905:2114 min05:210 min21 Jan
Port of Spain08:01 → 04:3904:500 min04:500 min21 Jan
London12:01 → 08:3905:500 min05:50123 min22 Jan
Durban14:01 → 10:3903:530 min03:5482 min22 Jan
Dubai16:01 → 12:3905:200 min05:20105 min22 Jan
Delhi17:31 → 14:0905:270 min05:27107 min22 Jan
Kolkata17:31 → 14:0904:340 min04:34104 min22 Jan
Singapore20:01 → 16:3905:390 min05:3996 min22 Jan
Sydney23:01 → 19:3904:460 min04:4780 min22 Jan
Suva00:01 → 20:3904:190 min04:1988 min22 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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