Ruling · Yama Tarpaṇa · 2037

Thursday 15 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 395 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 14 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:41 aruṇodaya beginssunrise 07:36
05:1705:4106:0506:2906:5307:1707:4108:05

0 of 114 minutes covered

Dawn of Thursday 15 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:35
05:1705:4106:0506:2906:5307:1707:4108:05

114 of 114 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 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan.

    2037-01-14T06:10:30Z → 2037-01-15T07:40:14Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:36 on the 14th, 05:41–07:35 on the 15th.

    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 114 minutes on the 14th and 114 of 114 on the 15th.

    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 23682 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2037: Thursday 15 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2037 falls on Thursday 15 January. Caturdaśī runs from 14:10 on Wed 14 Jan to 15:40 on Thu 15 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2037/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 15 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 15 Jan
compat-drikpanchangComparison profileThu 15 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 14thCoveredAruṇodaya 15thCoveredRuled
Los Angeles22:10 → 23:4005:08111 min05:070 min14 Jan
Chicago00:10 → 01:4005:20116 min05:200 min14 Jan
Jersey City01:10 → 02:4005:23116 min05:230 min14 Jan
Port of Spain02:10 → 03:4004:49100 min04:490 min14 Jan
London06:10 → 07:4005:55110 min05:54106 min14 Jan
Durban08:10 → 09:4003:480 min03:4981 min15 Jan
Dubai10:10 → 11:4005:200 min05:20106 min15 Jan
Delhi11:40 → 13:1005:270 min05:27108 min15 Jan
Kolkata11:40 → 13:1004:340 min04:34105 min15 Jan
Singapore14:10 → 15:4005:370 min05:3796 min15 Jan
Sydney17:10 → 18:4004:400 min04:4179 min15 Jan
Suva18:10 → 19:4004:150 min04:1687 min15 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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