Ruling · Yama Tarpaṇa · 2055

Tuesday 26 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 346 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 26 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 27 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:37 aruṇodaya beginssunrise 07:29
05:1305:3706:0106:2506:4907:1307:3708:01

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 22:30 on Mon 25 Jan to 23:52 on Tue 26 Jan.

    2055-01-25T14:29:32Z → 2055-01-26T15:51:56Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:38–07:30 on the 26th, 05:37–07:29 on the 27th.

    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 26th and 0 of 112 on the 27th.

    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 20730 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2055: Tuesday 26 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2055 falls on Tuesday 26 January. Caturdaśī runs from 22:30 on Mon 25 Jan to 23:52 on Tue 26 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2055/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 26 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 26 Jan
compat-drikpanchangComparison profileTue 26 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 25thCoveredAruṇodaya 26thCoveredRuled
Los Angeles06:30 → 07:5205:0525 min05:05109 min26 Jan
Chicago08:30 → 09:5205:160 min05:15114 min26 Jan
Jersey City09:30 → 10:5205:190 min05:19113 min26 Jan
Port of Spain10:30 → 11:5204:510 min04:5199 min26 Jan
London14:30 → 15:5205:470 min05:46121 min26 Jan
Durban16:30 → 17:5203:560 min03:5783 min26 Jan
Dubai18:30 → 19:5205:190 min05:19105 min26 Jan
Delhi20:00 → 21:2205:260 min05:26106 min26 Jan
Kolkata20:00 → 21:2204:340 min04:34104 min26 Jan
Singapore22:30 → 23:5205:400 min05:4096 min26 Jan
Sydney01:30 → 02:5204:490 min04:5081 min26 Jan
Suva02:30 → 03:5204:210 min04:2188 min26 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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