Ruling · Yama Tarpaṇa · 1930

Tuesday 28 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 301 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 28 January

Taken. The only dawn Caturdaśī reaches.

05:38 aruṇodaya beginssunrise 07:29
05:1405:3806:0206:2606:5007:1407:3808:02

112 of 112 minutes covered

Dawn of Wednesday 29 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:37 aruṇodaya beginssunrise 07:28
05:1305:3706:0106:2506:4907:1307:3708:01

0 of 111 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 22:02 on Mon 27 Jan to 00:36 on Wed 29 Jan.

    1930-01-27T14:01:35Z → 1930-01-28T16:35:57Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:38–07:29 on the 28th, 05:37–07:28 on the 29th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 112 of 112 minutes on the 28th and 0 of 111 on the 29th.

    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 18063 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1930: Tuesday 28 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1930 falls on Tuesday 28 January. Caturdaśī runs from 22:02 on Mon 27 Jan to 00:36 on Wed 29 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1930/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 28 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 28 Jan
compat-drikpanchangComparison profileTue 28 Jan
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 27thCoveredAruṇodaya 28thCoveredRuled
Los Angeles06:02 → 08:3605:0553 min05:05109 min28 Jan
Chicago08:02 → 10:3605:150 min05:15113 min28 Jan
Jersey City09:02 → 11:3605:190 min05:18113 min28 Jan
Port of Spain10:02 → 12:3604:510 min04:5199 min28 Jan
London14:02 → 16:3605:460 min05:45121 min28 Jan
Durban16:02 → 18:3603:570 min03:5883 min28 Jan
Dubai18:02 → 20:3605:190 min05:19105 min28 Jan
Delhi19:32 → 22:0605:260 min05:26106 min28 Jan
Kolkata19:32 → 22:0604:340 min04:34104 min28 Jan
Singapore21:02 → 23:3604:400 min04:4096 min28 Jan
Sydney00:02 → 02:3603:500 min03:5181 min28 Jan
Suva02:02 → 04:3604:220 min04:2288 min28 Jan
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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