Ruling · Yama Tarpaṇa · 2071

Friday 30 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 207 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 29 January

Caturdaśī is absent from aruṇodaya. Not taken.

05:36 aruṇodaya beginssunrise 07:27
05:1205:3606:0006:2406:4807:1207:3608:00

0 of 111 minutes covered

Dawn of Friday 30 January

Taken. The only dawn Caturdaśī reaches.

05:36 aruṇodaya beginssunrise 07:27
05:1205:3606:0006:2406:4807:1207:3608:00

111 of 111 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 10:55 on Thu 29 Jan to 13:14 on Fri 30 Jan.

    2071-01-29T02:54:49Z → 2071-01-30T05:13:33Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:36–07:27 on the 29th, 05:36–07:27 on the 30th.

    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 111 minutes on the 29th and 111 of 111 on the 30th.

    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 12442 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2071: Friday 30 January.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2071 falls on Friday 30 January. Caturdaśī runs from 10:55 on Thu 29 Jan to 13:14 on Fri 30 Jan and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2071/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 30 Jan
Ahargaṇa, classicalDisc centre, no refractionFri 30 Jan
compat-drikpanchangComparison profileFri 30 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 29thCoveredAruṇodaya 30thCoveredRuled
Los Angeles18:55 → 21:1405:04108 min05:030 min29 Jan
Chicago20:55 → 23:1405:13113 min05:130 min29 Jan
Jersey City21:55 → 00:1405:17112 min05:170 min29 Jan
Port of Spain22:55 → 01:1404:5199 min04:510 min29 Jan
London02:55 → 05:1405:43120 min05:420 min29 Jan
Durban04:55 → 07:1403:5927 min03:5984 min30 Jan
Dubai06:55 → 09:1405:198 min05:18104 min30 Jan
Delhi08:25 → 10:4405:250 min05:25106 min30 Jan
Kolkata08:25 → 10:4404:340 min04:33103 min30 Jan
Singapore10:55 → 13:1405:400 min05:4196 min30 Jan
Sydney13:55 → 16:1404:520 min04:5382 min30 Jan
Suva14:55 → 17:1404:230 min04:2389 min30 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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