Ruling · Yama Tarpaṇa · 2041

Thursday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 497 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 Thursday 31 January

Taken. The only dawn Caturdaśī reaches.

05:35 aruṇodaya beginssunrise 07:26
05:1105:3505:5906:2306:4707:1107:3507:59

110 of 110 minutes covered

Dawn of Friday 1 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:34 aruṇodaya beginssunrise 07:25
05:1005:3405:5806:2206:4607:1007:3407:58

0 of 110 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 21:18 on Wed 30 Jan to 17:37 on Thu 31 Jan.

    2041-01-30T13:17:40Z → 2041-01-31T09:37:05Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:26 on the 31st, 05:34–07:25 on the 1st.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 110 of 110 minutes on the 31st and 0 of 110 on the 1st.

    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 29843 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2041: Thursday 31 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2041 falls on Thursday 31 January. Caturdaśī runs from 21:18 on Wed 30 Jan to 17:37 on Thu 31 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2041/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 31 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 31 Jan
compat-drikpanchangComparison profileThu 31 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 30thCoveredAruṇodaya 31stCoveredRuled
Los Angeles05:18 → 01:3705:0394 min05:030 min30 Jan
Chicago07:18 → 03:3705:120 min05:120 min30 Jan
Jersey City08:18 → 04:3705:160 min05:160 min30 Jan
Port of Spain09:18 → 05:3704:510 min04:5146 min31 Jan
London13:18 → 09:3705:420 min05:41119 min31 Jan
Durban15:18 → 11:3704:000 min04:0084 min31 Jan
Dubai17:18 → 13:3705:180 min05:18104 min31 Jan
Delhi18:48 → 15:0705:250 min05:24106 min31 Jan
Kolkata18:48 → 15:0704:330 min04:33103 min31 Jan
Singapore21:18 → 17:3705:410 min05:4196 min31 Jan
Sydney00:18 → 20:3704:530 min04:5482 min31 Jan
Suva01:18 → 21:3704:230 min04:2489 min31 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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