SELECT Distinct
[Entry Date]

FROM
myTable


WHERE

[entry date] >= dateadd(day,datediff(day,1,GETDATE()),0) AND
[entry date] < dateadd(day,datediff(day,0,GETDATE()),0)

IF(DATEPART(dw,GETDATE())=1)
BEGIN
    SELECT *
    FROM  myTable
    WHERE [entry date] >= dateadd(day,-3,GETDATE())
END
ELSE
BEGIN

    SELECT *
    FROM  myTable
    WHERE [entry date] >= dateadd(day,-1,GETDATE())
END