Ruling · Yama Tarpaṇa · 1935

Saturday 2 February

Boundaryin Baoding, under the Rashtriya Panchang method. Caturdaśī reaches aruṇodaya on neither day and the rule does not say what then. Say “contested”.

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 2 February

Taken. Caturdaśī reaches neither dawn; this is the day it falls on.

05:35 aruṇodaya beginssunrise 07:25
Caturdaśī begins 07:33:15
05:1105:3505:5906:2306:4707:1107:3507:59

0 of 110 minutes covered

Dawn of Sunday 3 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 07:33 on Sat 2 Feb to 04:08 on Sun 3 Feb.

    1935-02-01T23:33:16Z → 1935-02-02T20:07:40Z

  2. 02

    Kāla

    Aruṇodaya is 2 muhūrtas before sunrise: 05:35–07:25 on the 2nd, 05:34–07:24 on the 3rd.

    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 110 minutes on the 2nd and 0 of 110 on the 3rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

    Neither dawn qualifies. The day the tithi falls on is taken.

    priority: unstated → tithi-day · margin 488 s

  5. 05

    Ruling

    Yama Tarpaṇa, Baoding, 1935: Saturday 2 February.

    confidence: boundary (absent-unstated)

Say it like this

In Baoding, Yama Tarpaṇa 1935 falls on Saturday 2 February. Caturdaśī runs from 07:33 on Sat 2 Feb to 04:08 on Sun 3 Feb, and reaches aruṇodaya on neither day.

ahargana.org/baoding/festivals/1935/yama-tarpana · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 2 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 2 Feb
compat-drikpanchangComparison profileSat 2 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 1stCoveredAruṇodaya 2ndCoveredRuled
Los Angeles15:33 → 12:0805:030 min05:03108 min2 Feb
Chicago17:33 → 14:0805:120 min05:12112 min2 Feb
Jersey City18:33 → 15:0805:160 min05:15111 min2 Feb
Port of Spain19:33 → 16:0804:510 min04:5199 min2 Feb
London23:33 → 20:0805:420 min05:40119 min2 Feb
Durban01:33 → 22:0804:000 min04:0184 min2 Feb
Dubai03:33 → 00:0805:180 min05:18104 min2 Feb
Delhi05:03 → 01:3805:250 min05:24105 min2 Feb
Kolkata05:03 → 01:3804:330 min04:3373 min2 Feb
Singapore06:53 → 03:2805:010 min05:010 min2 Feb
Sydney09:33 → 06:0803:540 min03:550 min3 Feb
Suva11:33 → 08:0804:240 min04:240 min3 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