Hi Magman
You can use the advance SQL reports for this functionality.
Best way is compose your report they way you want in a standard report designing format do not care about the time frames . than copy the SQL code of this report and paste to a new advance SQL report.
change the time frame in this report matching your requriement.Refer to the below post for SQL codes of time range.
HTH
Rajiv
File > New Report > Advanced SQL.