Ruling · Yama Tarpaṇa · 2087

Sunday 2 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 399 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 Sunday 2 February

Taken. The only dawn Caturdaśī reaches.

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

110 of 110 minutes covered

Dawn of Monday 3 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:33 aruṇodaya beginssunrise 07:23
05:0905:3305:5706:2106:4507:0907:33

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 22:55 on Sat 1 Feb to 21:51 on Sun 2 Feb.

    2087-02-01T14:54:49Z → 2087-02-02T13:51:22Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:34–07:24 on the 2nd, 05:33–07:23 on the 3rd.

    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 2nd and 0 of 110 on the 3rd.

    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 23952 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2087: Sunday 2 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2087 falls on Sunday 2 February. Caturdaśī runs from 22:55 on Sat 1 Feb to 21:51 on Sun 2 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2087/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Feb
Ahargaṇa, classicalDisc centre, no refractionSun 2 Feb
compat-drikpanchangComparison profileSun 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 1stCoveredAruṇodaya 2ndCoveredRuled
Los Angeles06:55 → 05:5105:020 min05:0249 min2 Feb
Chicago08:55 → 07:5105:110 min05:11111 min2 Feb
Jersey City09:55 → 08:5105:150 min05:15111 min2 Feb
Port of Spain10:55 → 09:5104:510 min04:5199 min2 Feb
London14:55 → 13:5105:400 min05:39118 min2 Feb
Durban16:55 → 15:5104:010 min04:0284 min2 Feb
Dubai18:55 → 17:5105:180 min05:18104 min2 Feb
Delhi20:25 → 19:2105:240 min05:24105 min2 Feb
Kolkata20:25 → 19:2104:330 min04:33103 min2 Feb
Singapore22:55 → 21:5105:410 min05:4196 min2 Feb
Sydney01:55 → 00:5104:550 min04:5682 min2 Feb
Suva02:55 → 01:5104:240 min04:2589 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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