I'm not sure why it isn't working for you. I have several reports where I have my filter results set to hour of day (24 hour format) greater than or equal to a start time and less than or equal to a closing time and they work fine. If you could post a screen shot of your Select Fields and Filter Results tabs, I'm sure someone on here can help figure it out. You might also post the SQL query for the report. (I'm no sql guru but there are quite a few on here.) That might help figure out why your time filter isn't working. With the report open in design view, you can add a SQL tab that shows the SQL query by going to Report | Show SQL.