Ruling · Yama Tarpaṇa · 2011

Wednesday 2 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 19 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 1 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:35 aruṇodaya beginssunrise 07:25
Caturdaśī begins 07:43:54
05:1105:3505:5906:2306:4707:1107:3507:59

0 of 110 minutes covered

Dawn of Wednesday 2 February

Taken. The only dawn Caturdaśī reaches.

05:34 aruṇodaya beginssunrise 07:24
05:1005:3405:5806:2206:4607:1007:3407:58

110 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 07:44 on Tue 1 Feb to 08:56 on Wed 2 Feb.

    2011-01-31T23:43:55Z → 2011-02-02T00:56:28Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:25 on the 1st, 05:34–07:24 on the 2nd.

    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 110 minutes on the 1st and 110 of 110 on the 2nd.

    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 1116 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2011: Wednesday 2 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2011 falls on Wednesday 2 February. Caturdaśī runs from 07:44 on Tue 1 Feb to 08:56 on Wed 2 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2011/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 2 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 2 Feb
compat-drikpanchangComparison profileWed 2 Feb
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 31stCoveredAruṇodaya 2ndCoveredRuled
Los Angeles15:44 → 16:5605:030 min05:020 min1 Feb
Chicago17:44 → 18:5605:120 min05:110 min1 Feb
Jersey City18:44 → 19:5605:160 min05:150 min1 Feb
Port of Spain19:44 → 20:5604:510 min04:510 min1 Feb
London23:44 → 00:5605:420 min05:400 min1 Feb
Durban01:44 → 02:5604:000 min04:010 min1 Feb
Dubai03:44 → 04:5605:180 min05:180 min1 Feb
Delhi05:14 → 06:2605:250 min05:2462 min1 Feb
Kolkata05:14 → 06:2604:330 min04:33103 min2 Feb
Singapore07:44 → 08:5605:410 min05:4196 min2 Feb
Sydney10:44 → 11:5604:530 min04:5582 min2 Feb
Suva12:44 → 13:5605:240 min05:2489 min2 Feb
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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