Ruling · Yama Tarpaṇa · 2015

Monday 19 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 140 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 Monday 19 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:34
05:1705:4106:0506:2906:5307:1707:4108:05

114 of 114 minutes covered

Dawn of Tuesday 20 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:34
05:1605:4006:0406:2806:5207:1607:4008:04

0 of 113 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 03:21 on Mon 19 Jan to 00:29 on Tue 20 Jan.

    2015-01-18T19:20:57Z → 2015-01-19T16:29:28Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:34 on the 19th, 05:40–07:34 on the 20th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 114 of 114 minutes on the 19th and 0 of 113 on the 20th.

    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 8376 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2015: Monday 19 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2015 falls on Monday 19 January. Caturdaśī runs from 03:21 on Mon 19 Jan to 00:29 on Tue 20 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2015/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Jan
Ahargaṇa, classicalDisc centre, no refractionMon 19 Jan
compat-drikpanchangComparison profileMon 19 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 18thCoveredAruṇodaya 19thCoveredRuled
Los Angeles11:21 → 08:2905:070 min05:07110 min19 Jan
Chicago13:21 → 10:2905:190 min05:19116 min19 Jan
Jersey City14:21 → 11:2905:220 min05:22115 min19 Jan
Port of Spain15:21 → 12:2904:500 min04:5099 min19 Jan
London19:21 → 16:2905:530 min05:52124 min19 Jan
Durban21:21 → 18:2903:510 min03:5182 min19 Jan
Dubai23:21 → 20:2905:200 min05:20106 min19 Jan
Delhi00:51 → 21:5905:270 min05:27108 min19 Jan
Kolkata00:51 → 21:5904:340 min04:34105 min19 Jan
Singapore03:21 → 00:2905:380 min05:3896 min19 Jan
Sydney06:21 → 03:2904:430 min04:440 min19 Jan
Suva07:21 → 04:2904:170 min04:170 min20 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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