Ruling · Yama Tarpaṇa · 2013

Saturday 9 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 536 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 9 February

Taken. The only dawn Caturdaśī reaches.

05:29 aruṇodaya beginssunrise 07:17
05:0505:2905:5306:1706:4107:0507:29

108 of 108 minutes covered

Dawn of Sunday 10 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:28 aruṇodaya beginssunrise 07:16
05:0405:2805:5206:1606:4007:0407:28

0 of 108 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 20:33 on Fri 8 Feb to 17:49 on Sat 9 Feb.

    2013-02-08T12:32:56Z → 2013-02-09T09:49:21Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:29–07:17 on the 9th, 05:28–07:16 on the 10th.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 108 of 108 minutes on the 9th and 0 of 108 on the 10th.

    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 32160 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2013: Saturday 9 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2013 falls on Saturday 9 February. Caturdaśī runs from 20:33 on Fri 8 Feb to 17:49 on Sat 9 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2013/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 9 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 9 Feb
compat-drikpanchangComparison profileSat 9 Feb
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 8thCoveredAruṇodaya 9thCoveredRuled
Los Angeles04:33 → 01:4904:58106 min04:580 min8 Feb
Chicago06:33 → 03:4905:0622 min05:050 min8 Feb
Jersey City07:33 → 04:4905:100 min05:090 min8 Feb
Port of Spain08:33 → 05:4904:500 min04:5059 min9 Feb
London12:33 → 09:4905:320 min05:31115 min9 Feb
Durban14:33 → 11:4904:050 min04:0686 min9 Feb
Dubai16:33 → 13:4905:150 min05:15103 min9 Feb
Delhi18:03 → 15:1905:210 min05:21104 min9 Feb
Kolkata18:03 → 15:1904:310 min04:30102 min9 Feb
Singapore20:33 → 17:4905:410 min05:4196 min9 Feb
Sydney23:33 → 20:4905:000 min05:0184 min9 Feb
Suva00:33 → 21:4904:270 min04:2790 min9 Feb
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