Ruling · Yama Tarpaṇa · 2001

Tuesday 23 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 495 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 22 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:32
05:1605:4006:0406:2806:5207:1607:4008:04

0 of 113 minutes covered

Dawn of Tuesday 23 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 15:47 on Mon 22 Jan to 18:24 on Tue 23 Jan.

    2001-01-22T07:47:07Z → 2001-01-23T10:24:04Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:32 on the 22nd, 05:39–07:32 on the 23rd.

    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 22nd and 113 of 113 on the 23rd.

    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 29686 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2001: Tuesday 23 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2001 falls on Tuesday 23 January. Caturdaśī runs from 15:47 on Mon 22 Jan to 18:24 on Tue 23 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2001/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 23 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 23 Jan
compat-drikpanchangComparison profileTue 23 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 22ndCoveredAruṇodaya 23rdCoveredRuled
Los Angeles23:47 → 02:2405:06110 min05:060 min22 Jan
Chicago01:47 → 04:2405:17115 min05:170 min22 Jan
Jersey City02:47 → 05:2405:21114 min05:204 min22 Jan
Port of Spain03:47 → 06:2404:5099 min04:5193 min22 Jan
London07:47 → 10:2405:506 min05:49123 min23 Jan
Durban09:47 → 12:2403:540 min03:5582 min23 Jan
Dubai11:47 → 14:2405:200 min05:20105 min23 Jan
Delhi13:17 → 15:5405:270 min05:27107 min23 Jan
Kolkata13:17 → 15:5404:340 min04:34104 min23 Jan
Singapore15:47 → 18:2405:390 min05:3996 min23 Jan
Sydney18:47 → 21:2404:470 min04:4780 min23 Jan
Suva19:47 → 22:2404:190 min04:2088 min23 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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