Ruling · Yama Tarpaṇa · 1903

Tuesday 27 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 434 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 27 January

Taken. The only dawn Caturdaśī reaches.

05:38 aruṇodaya beginssunrise 07:30
05:1405:3806:0206:2606:5007:1407:3808:02

112 of 112 minutes covered

Dawn of Wednesday 28 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:38 aruṇodaya beginssunrise 07:29
05:1405:3806:0206:2606:5007:1407:3808:02

0 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 19:57 on Mon 26 Jan to 22:24 on Tue 27 Jan.

    1903-01-26T11:56:33Z → 1903-01-27T14:23:43Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:38–07:30 on the 27th, 05:38–07:29 on the 28th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 112 of 112 minutes on the 27th and 0 of 112 on the 28th.

    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 26043 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1903: Tuesday 27 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1903 falls on Tuesday 27 January. Caturdaśī runs from 19:57 on Mon 26 Jan to 22:24 on Tue 27 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1903/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 27 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 27 Jan
compat-drikpanchangComparison profileTue 27 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 26thCoveredAruṇodaya 27thCoveredRuled
Los Angeles03:57 → 06:2405:06109 min05:0578 min26 Jan
Chicago05:57 → 08:2405:1673 min05:16114 min27 Jan
Jersey City06:57 → 09:2405:2016 min05:19113 min27 Jan
Port of Spain07:57 → 10:2404:510 min04:5199 min27 Jan
London11:57 → 14:2405:480 min05:47122 min27 Jan
Durban13:27 → 15:5403:260 min03:2783 min27 Jan
Dubai15:38 → 18:0505:010 min05:01105 min27 Jan
Delhi17:18 → 19:4505:180 min05:17106 min27 Jan
Kolkata17:18 → 19:4504:250 min04:25104 min27 Jan
Singapore18:52 → 21:1904:350 min04:3596 min27 Jan
Sydney21:57 → 00:2403:490 min03:5081 min27 Jan
Suva23:52 → 02:1904:160 min04:1688 min27 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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