Ruling · Yama Tarpaṇa · 1917

Monday 22 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 411 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 22 January

Taken. The only dawn Caturdaśī reaches.

05:40 aruṇodaya beginssunrise 07:33
05:1605:4006:0406:2806:5207:1607:4008:04

113 of 113 minutes covered

Dawn of Tuesday 23 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:40 aruṇodaya beginssunrise 07:32
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 22:49 on Sun 21 Jan to 19:21 on Mon 22 Jan.

    1917-01-21T14:49:26Z → 1917-01-22T11:21:25Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:33 on the 22nd, 05:40–07:32 on the 23rd.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 113 of 113 minutes on the 22nd and 0 of 113 on the 23rd.

    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 24633 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1917: Monday 22 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1917 falls on Monday 22 January. Caturdaśī runs from 22:49 on Sun 21 Jan to 19:21 on Mon 22 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1917/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 22 Jan
Ahargaṇa, classicalDisc centre, no refractionMon 22 Jan
compat-drikpanchangComparison profileMon 22 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 21stCoveredAruṇodaya 22ndCoveredRuled
Los Angeles06:49 → 03:2105:078 min05:070 min21 Jan
Chicago08:49 → 05:2105:180 min05:184 min22 Jan
Jersey City09:49 → 06:2105:220 min05:2160 min22 Jan
Port of Spain10:49 → 07:2104:500 min04:5199 min22 Jan
London14:49 → 11:2105:510 min05:50123 min22 Jan
Durban16:49 → 13:2103:530 min03:5482 min22 Jan
Dubai18:30 → 15:0205:010 min05:01105 min22 Jan
Delhi20:19 → 16:5105:270 min05:27107 min22 Jan
Kolkata20:19 → 16:5104:350 min04:35104 min22 Jan
Singapore21:49 → 18:2104:390 min04:3996 min22 Jan
Sydney01:49 → 22:2104:460 min04:4680 min22 Jan
Suva02:49 → 23:2104:190 min04:1988 min22 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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