Ruling · Yama Tarpaṇa · 2030

Friday 1 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 150 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 Friday 1 February

Taken. The only dawn Caturdaśī reaches.

05:35 aruṇodaya beginssunrise 07:25
05:1105:3505:5906:2306:4707:1107:3507:59

110 of 110 minutes covered

Dawn of Saturday 2 February

Caturdaśī is absent from aruṇodaya. Not taken.

05:34 aruṇodaya beginssunrise 07:24
05:1005:3405:5806:2206:4607:1007:3407:58

0 of 110 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 03:05 on Fri 1 Feb to 01:26 on Sat 2 Feb.

    2030-01-31T19:04:35Z → 2030-02-01T17:26:07Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:25 on the 1st, 05:34–07:24 on the 2nd.

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

  3. 03

    Rule

    Caturdaśī must be present during aruṇodaya. It covers 110 of 110 minutes on the 1st and 0 of 110 on the 2nd.

    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 9003 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 2030: Friday 1 February.

    confidence: determinate

Say it like this

In Baoding, Yama Tarpaṇa 2030 falls on Friday 1 February. Caturdaśī runs from 03:05 on Fri 1 Feb to 01:26 on Sat 2 Feb and covers all of aruṇodaya that dawn.

ahargana.org/baoding/festivals/2030/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 1 Feb
Ahargaṇa, classicalDisc centre, no refractionFri 1 Feb
compat-drikpanchangComparison profileFri 1 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 31stCoveredAruṇodaya 1stCoveredRuled
Los Angeles11:05 → 09:2605:030 min05:02108 min1 Feb
Chicago13:05 → 11:2605:120 min05:11112 min1 Feb
Jersey City14:05 → 12:2605:160 min05:15111 min1 Feb
Port of Spain15:05 → 13:2604:510 min04:5199 min1 Feb
London19:05 → 17:2605:410 min05:40119 min1 Feb
Durban21:05 → 19:2604:000 min04:0184 min1 Feb
Dubai23:05 → 21:2605:180 min05:18104 min1 Feb
Delhi00:35 → 22:5605:250 min05:24105 min1 Feb
Kolkata00:35 → 22:5604:330 min04:33103 min1 Feb
Singapore03:05 → 01:2605:410 min05:4196 min1 Feb
Sydney06:05 → 04:2604:540 min04:5512 min1 Feb
Suva07:05 → 05:2604:240 min04:240 min2 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