Ruling · Yama Tarpaṇa · 2064

Thursday 17 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 607 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 Thursday 17 January

Taken. The only dawn Caturdaśī reaches.

05:41 aruṇodaya beginssunrise 07:35
05:1705:4106:0506:2906:5307:1707:4108:05

114 of 114 minutes covered

Dawn of Friday 18 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:41 aruṇodaya beginssunrise 07:35
05:1705:4106:0506:2906:5307:1707:4108:05

0 of 114 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 18:59 on Wed 16 Jan to 19:34 on Thu 17 Jan.

    2064-01-16T10:58:42Z → 2064-01-17T11:33:42Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:35 on the 17th, 05:41–07:35 on the 18th.

    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 17th and 0 of 114 on the 18th.

    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 36425 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2064: Thursday 17 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2064 falls on Thursday 17 January. Caturdaśī runs from 18:59 on Wed 16 Jan to 19:34 on Thu 17 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2064/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 17 Jan
Ahargaṇa, classicalDisc centre, no refractionThu 17 Jan
compat-drikpanchangComparison profileThu 17 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 16thCoveredAruṇodaya 17thCoveredRuled
Los Angeles02:59 → 03:3405:07111 min05:070 min16 Jan
Chicago04:59 → 05:3405:19116 min05:1915 min16 Jan
Jersey City05:59 → 06:3405:2380 min05:2371 min16 Jan
Port of Spain06:59 → 07:3404:490 min04:5099 min17 Jan
London10:59 → 11:3405:540 min05:53125 min17 Jan
Durban12:59 → 13:3403:490 min03:5082 min17 Jan
Dubai14:59 → 15:3405:200 min05:20106 min17 Jan
Delhi16:29 → 17:0405:270 min05:27108 min17 Jan
Kolkata16:29 → 17:0404:340 min04:34105 min17 Jan
Singapore18:59 → 19:3405:370 min05:3796 min17 Jan
Sydney21:59 → 22:3404:420 min04:4279 min17 Jan
Suva22:59 → 23:3404:160 min04:1687 min17 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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