Ruling · Yama Tarpaṇa · 2089

Wednesday 9 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 498 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 9 February

Taken. The only dawn Caturdaśī reaches.

05:29 aruṇodaya beginssunrise 07:16
05:0505:2905:5306:1706:4107:0507:29

108 of 108 minutes covered

Dawn of Thursday 10 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:28 aruṇodaya beginssunrise 07:15
05:0405:2805:5206:1606:4007:0407:28

0 of 108 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 18:48 on Tue 8 Feb to 21:10 on Wed 9 Feb.

    2089-02-08T10:48:06Z → 2089-02-09T13:09:53Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:29–07:16 on the 9th, 05:28–07:15 on the 10th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 108 of 108 minutes on the 9th and 0 of 108 on the 10th.

    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 29875 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2089: Wednesday 9 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2089 falls on Wednesday 9 February. Caturdaśī runs from 18:48 on Tue 8 Feb to 21:10 on Wed 9 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2089/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 9 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 9 Feb
compat-drikpanchangComparison profileWed 9 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 8thCoveredAruṇodaya 9thCoveredRuled
Los Angeles02:48 → 05:1004:58106 min04:5712 min8 Feb
Chicago04:48 → 07:1005:05109 min05:04109 min8 Feb
Jersey City05:48 → 08:1005:1070 min05:09108 min9 Feb
Port of Spain06:48 → 09:1004:500 min04:5098 min9 Feb
London10:48 → 13:1005:310 min05:30115 min9 Feb
Durban12:48 → 15:1004:060 min04:0786 min9 Feb
Dubai14:48 → 17:1005:150 min05:15102 min9 Feb
Delhi16:18 → 18:4005:210 min05:20104 min9 Feb
Kolkata16:18 → 18:4004:310 min04:30102 min9 Feb
Singapore18:48 → 21:1005:420 min05:4295 min9 Feb
Sydney21:48 → 00:1005:000 min05:0184 min9 Feb
Suva22:48 → 01:1004:270 min04:2890 min9 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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