Ruling · Yama Tarpaṇa · 2012

Sunday 22 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 557 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 Saturday 21 January

Caturdaśī is absent from aruṇodaya. Not taken.

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

0 of 113 minutes covered

Dawn of Sunday 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

Caturdaśī presentAruṇodaya, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturdaśī runs from 18:20 on Sat 21 Jan to 16:49 on Sun 22 Jan.

    2012-01-21T10:19:54Z → 2012-01-22T08:49:20Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:40–07:33 on the 21st, 05:40–07:33 on the 22nd.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 0 of 113 minutes on the 21st and 113 of 113 on the 22nd.

    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 33398 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2012: Sunday 22 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2012 falls on Sunday 22 January. Caturdaśī runs from 18:20 on Sat 21 Jan to 16:49 on Sun 22 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2012/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 22 Jan
Ahargaṇa, classicalDisc centre, no refractionSun 22 Jan
compat-drikpanchangComparison profileSun 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 Angeles02:20 → 00:4905:07110 min05:060 min21 Jan
Chicago04:20 → 02:4905:18115 min05:170 min21 Jan
Jersey City05:20 → 03:4905:21114 min05:210 min21 Jan
Port of Spain06:20 → 04:4904:5010 min04:500 min21 Jan
London10:20 → 08:4905:510 min05:50123 min22 Jan
Durban12:20 → 10:4903:530 min03:5382 min22 Jan
Dubai14:20 → 12:4905:200 min05:20105 min22 Jan
Delhi15:50 → 14:1905:270 min05:27107 min22 Jan
Kolkata15:50 → 14:1904:340 min04:34104 min22 Jan
Singapore18:20 → 16:4905:390 min05:3996 min22 Jan
Sydney21:20 → 19:4904:450 min04:4680 min22 Jan
Suva23:20 → 20:4905:180 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

About Ahargaṇa