Ruling · Yama Tarpaṇa · 1929

Friday 8 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 268 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 Friday 8 February

Taken. The only dawn Caturdaśī reaches.

05:30 aruṇodaya beginssunrise 07:19
05:0605:3005:5406:1806:4207:0607:30

108 of 108 minutes covered

Dawn of Saturday 9 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:30 aruṇodaya beginssunrise 07:18
05:0605:3005:5406:1806:4207:0607:30

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 23:38 on Thu 7 Feb to 01:02 on Sat 9 Feb.

    1929-02-07T15:37:42Z → 1929-02-08T17:01:58Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:30–07:19 on the 8th, 05:30–07:18 on the 9th.

    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 8th and 0 of 108 on the 9th.

    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 16059 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1929: Friday 8 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1929 falls on Friday 8 February. Caturdaśī runs from 23:38 on Thu 7 Feb to 01:02 on Sat 9 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1929/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 8 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 8 Feb
compat-drikpanchangComparison profileFri 8 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 7thCoveredAruṇodaya 8thCoveredRuled
Los Angeles07:38 → 09:0205:000 min04:59106 min8 Feb
Chicago09:38 → 11:0205:070 min05:06110 min8 Feb
Jersey City10:38 → 12:0205:110 min05:11109 min8 Feb
Port of Spain11:38 → 13:0204:510 min04:5098 min8 Feb
London15:38 → 17:0205:340 min05:33116 min8 Feb
Durban17:38 → 19:0204:050 min04:0585 min8 Feb
Dubai19:38 → 21:0205:160 min05:16103 min8 Feb
Delhi21:08 → 22:3205:220 min05:22104 min8 Feb
Kolkata21:08 → 22:3204:320 min04:31102 min8 Feb
Singapore22:38 → 00:0204:410 min04:4296 min8 Feb
Sydney01:38 → 03:0203:590 min04:0084 min8 Feb
Suva03:38 → 05:0204:270 min04:2790 min8 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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