Ruling · Yama Tarpaṇa · 2065

Wednesday 4 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 642 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 Wednesday 4 February

Taken. The only dawn Caturdaśī reaches.

05:32 aruṇodaya beginssunrise 07:22
05:0805:3205:5606:2006:4407:0807:32

109 of 109 minutes covered

Dawn of Thursday 5 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:32 aruṇodaya beginssunrise 07:21
05:0805:3205:5606:2006:4407:0807:32

0 of 109 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 18:50 on Tue 3 Feb to 18:13 on Wed 4 Feb.

    2065-02-03T10:50:26Z → 2065-02-04T10:13:24Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:32–07:22 on the 4th, 05:32–07:21 on the 5th.

    arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 109 of 109 minutes on the 4th and 0 of 109 on the 5th.

    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 38517 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2065: Wednesday 4 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2065 falls on Wednesday 4 February. Caturdaśī runs from 18:50 on Tue 3 Feb to 18:13 on Wed 4 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2065/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 4 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 4 Feb
compat-drikpanchangComparison profileWed 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 Angeles02:50 → 02:1305:01107 min05:010 min3 Feb
Chicago04:50 → 04:1305:09111 min05:090 min3 Feb
Jersey City05:50 → 05:1305:1474 min05:131 min3 Feb
Port of Spain06:50 → 06:1304:510 min04:5183 min4 Feb
London10:50 → 10:1305:380 min05:36117 min4 Feb
Durban12:50 → 12:1304:020 min04:0385 min4 Feb
Dubai14:50 → 14:1305:170 min05:17103 min4 Feb
Delhi16:20 → 15:4305:230 min05:23105 min4 Feb
Kolkata16:20 → 15:4304:320 min04:32102 min4 Feb
Singapore18:50 → 18:1305:410 min05:4196 min4 Feb
Sydney21:50 → 21:1304:570 min04:5783 min4 Feb
Suva22:50 → 22:1304:250 min04:2689 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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