Ruling · Yama Tarpaṇa · 2070

Monday 10 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 239 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 9 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:29 aruṇodaya beginssunrise 07:17
05:0505:2905:5306:1706:4107:0507:29

0 of 108 minutes covered

Dawn of Monday 10 February

Taken. The only dawn Caturdaśī reaches.

05:28 aruṇodaya beginssunrise 07:16
05:0405:2805:5206:1606:4007:0407:28

108 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 11:15 on Sun 9 Feb to 11:21 on Mon 10 Feb.

    2070-02-09T03:15:15Z → 2070-02-10T03:20:58Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:29–07:17 on the 9th, 05:28–07:16 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 0 of 108 minutes on the 9th and 108 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 14310 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2070: Monday 10 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2070 falls on Monday 10 February. Caturdaśī runs from 11:15 on Sun 9 Feb to 11:21 on Mon 10 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2070/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 10 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 10 Feb
compat-drikpanchangComparison profileMon 10 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 9thCoveredAruṇodaya 10thCoveredRuled
Los Angeles19:15 → 19:2104:58106 min04:570 min9 Feb
Chicago21:15 → 21:2105:05109 min05:040 min9 Feb
Jersey City22:15 → 22:2105:09109 min05:080 min9 Feb
Port of Spain23:15 → 23:2104:5098 min04:500 min9 Feb
London03:15 → 03:2105:30115 min05:290 min9 Feb
Durban05:15 → 05:2104:0617 min04:0774 min10 Feb
Dubai07:15 → 07:2105:150 min05:14102 min10 Feb
Delhi08:45 → 08:5105:210 min05:20104 min10 Feb
Kolkata08:45 → 08:5104:300 min04:30102 min10 Feb
Singapore11:15 → 11:2105:410 min05:4195 min10 Feb
Sydney14:15 → 14:2105:010 min05:0284 min10 Feb
Suva15:15 → 15:2104:280 min04:2890 min10 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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