Ruling · Yama Tarpaṇa · 1999

Saturday 16 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 382 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 16 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 Sunday 17 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 22:22 on Fri 15 Jan to 23:19 on Sat 16 Jan.

    1999-01-15T14:22:08Z → 1999-01-16T15:19:12Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:41–07:35 on the 16th, 05:41–07:35 on the 17th.

    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 16th and 0 of 114 on the 17th.

    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 22912 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1999: Saturday 16 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 1999 falls on Saturday 16 January. Caturdaśī runs from 22:22 on Fri 15 Jan to 23:19 on Sat 16 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/1999/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 16 Jan
Ahargaṇa, classicalDisc centre, no refractionSat 16 Jan
compat-drikpanchangComparison profileSat 16 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 15thCoveredAruṇodaya 16thCoveredRuled
Los Angeles06:22 → 07:1905:0837 min05:07111 min16 Jan
Chicago08:22 → 09:1905:200 min05:19116 min16 Jan
Jersey City09:22 → 10:1905:230 min05:23115 min16 Jan
Port of Spain10:22 → 11:1904:490 min04:49100 min16 Jan
London14:22 → 15:1905:550 min05:54125 min16 Jan
Durban16:22 → 17:1903:480 min03:4981 min16 Jan
Dubai18:22 → 19:1905:200 min05:20106 min16 Jan
Delhi19:52 → 20:4905:270 min05:27108 min16 Jan
Kolkata19:52 → 20:4904:340 min04:34105 min16 Jan
Singapore22:22 → 23:1905:370 min05:3796 min16 Jan
Sydney01:22 → 02:1904:410 min04:4179 min16 Jan
Suva03:22 → 04:1905:150 min05:1687 min16 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