I'll have a look at how I can handle this. The program was not really designed with working hours spanning through multiple days so it might be hard to fix.

If it could detect when midnight hits and then put midnight as the end time for the day that just ended and then start counting towards the next day, that would be cool. But then the problem would be to get it to stop counting from the time I leave to the time I sign back in the next morning. Perhaps during the hours of 12am-6am if someone locks their computer for at least 2h, that locked screen period should be automatically counted as "pause" (break) for the new day, since it's safe to assume they left at that point. Then when they sign back in after 6am, it'll continue counting from where it left off.

Honestly though, this is more of a bug in my life than a bug in your application :)