Ruling · Yama Tarpaṇa · 2075

Wednesday 16 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 9 min 25 s.

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 15 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 Wednesday 16 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:35
Caturdaśī ends 05:50:35
05:1705:4106:0506:2906:5307:1707:4108:05

9 of 114 minutes covered, the first 9

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 09:10 on Tue 15 Jan to 05:51 on Wed 16 Jan.

    2075-01-15T01:10:00Z → 2075-01-15T21:50:35Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:36 on the 15th, 05:41–07:35 on the 16th.

    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 15th and 9 of 114 on the 16th.

    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 565 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2075: Wednesday 16 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2075 falls on Wednesday 16 January. Caturdaśī runs from 09:10 on Tue 15 Jan to 05:51 on Wed 16 Jan and covers 9 of 114 minutes of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2075/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 16 Jan
Ahargaṇa, classicalDisc centre, no refractionWed 16 Jan
compat-drikpanchangComparison profileWed 16 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 15thCoveredAruṇodaya 16thCoveredRuled
Los Angeles17:10 → 13:5105:08111 min05:070 min15 Jan
Chicago19:10 → 15:5105:20116 min05:190 min15 Jan
Jersey City20:10 → 16:5105:23115 min05:230 min15 Jan
Port of Spain21:10 → 17:5104:49100 min04:490 min15 Jan
London01:10 → 21:5105:54125 min05:540 min15 Jan
Durban03:10 → 23:5103:4981 min03:500 min15 Jan
Dubai05:10 → 01:5105:20106 min05:200 min15 Jan
Delhi06:40 → 03:2105:2735 min05:270 min15 Jan
Kolkata06:40 → 03:2104:340 min04:340 min15 Jan
Singapore09:10 → 05:5105:370 min05:3713 min16 Jan
Sydney12:10 → 08:5104:410 min04:4279 min16 Jan
Suva13:10 → 09:5104:160 min04:1687 min16 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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