Ruling · Yama Tarpaṇa · 1924

Monday 4 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 230 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 Sunday 3 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:34 aruṇodaya beginssunrise 07:25
05:1005:3405:5806:2206:4607:1007:3407:58

0 of 110 minutes covered

Dawn of Monday 4 February

Taken. The only dawn Caturdaśī reaches.

05:34 aruṇodaya beginssunrise 07:24
05:1005:3405:5806:2206:4607:1007:3407:58

110 of 110 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 13:11 on Sun 3 Feb to 11:13 on Mon 4 Feb.

    1924-02-03T05:11:28Z → 1924-02-04T03:13:20Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:34–07:25 on the 3rd, 05:34–07:24 on the 4th.

    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 110 minutes on the 3rd and 110 of 110 on the 4th.

    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 13782 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1924: Monday 4 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1924 falls on Monday 4 February. Caturdaśī runs from 13:11 on Sun 3 Feb to 11:13 on Mon 4 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1924/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 4 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 4 Feb
compat-drikpanchangComparison profileMon 4 Feb
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 3rdCoveredAruṇodaya 4thCoveredRuled
Los Angeles21:11 → 19:1305:02108 min05:020 min3 Feb
Chicago23:11 → 21:1305:11112 min05:100 min3 Feb
Jersey City00:11 → 22:1305:15111 min05:140 min3 Feb
Port of Spain01:11 → 23:1304:5199 min04:510 min3 Feb
London05:11 → 03:1305:40119 min05:390 min3 Feb
Durban07:11 → 05:1304:010 min04:0271 min4 Feb
Dubai09:11 → 07:1305:180 min05:18104 min4 Feb
Delhi10:41 → 08:4305:240 min05:24105 min4 Feb
Kolkata10:41 → 08:4304:330 min04:33103 min4 Feb
Singapore12:11 → 10:1304:410 min04:4196 min4 Feb
Sydney15:11 → 13:1303:550 min03:5682 min4 Feb
Suva17:11 → 15:1304:250 min04:2589 min4 Feb
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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