Ruling · Yama Tarpaṇa · 1933

Wednesday 25 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 129 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 Tuesday 24 January

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 112 minutes covered

Dawn of Wednesday 25 January

Taken. The only dawn Caturdaśī reaches.

05:39 aruṇodaya beginssunrise 07:31
05:1505:3906:0306:2706:5107:1507:3908:03

112 of 112 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 12:19 on Tue 24 Jan to 09:40 on Wed 25 Jan.

    1933-01-24T04:19:11Z → 1933-01-25T01:40:15Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:39–07:32 on the 24th, 05:39–07:31 on the 25th.

    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 112 minutes on the 24th and 112 of 112 on the 25th.

    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 7756 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1933: Wednesday 25 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1933 falls on Wednesday 25 January. Caturdaśī runs from 12:19 on Tue 24 Jan to 09:40 on Wed 25 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1933/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 25 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 25 Jan
compat-drikpanchangComparison profileWed 25 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 24thCoveredAruṇodaya 25thCoveredRuled
Los Angeles20:19 → 17:4005:06110 min05:060 min24 Jan
Chicago22:19 → 19:4005:17114 min05:160 min24 Jan
Jersey City23:19 → 20:4005:20114 min05:200 min24 Jan
Port of Spain00:19 → 21:4004:5199 min04:510 min24 Jan
London04:19 → 01:4005:49122 min05:480 min24 Jan
Durban06:19 → 03:4003:550 min03:560 min24 Jan
Dubai08:19 → 05:4005:200 min05:2021 min25 Jan
Delhi09:49 → 07:1005:270 min05:27104 min25 Jan
Kolkata09:49 → 07:1004:350 min04:34104 min25 Jan
Singapore11:39 → 09:0005:000 min05:0096 min25 Jan
Sydney14:19 → 11:4003:480 min03:4980 min25 Jan
Suva16:19 → 13:4004:200 min04:2188 min25 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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