conditional formatting displays incorrect value when time is 12:00

hello,

I've heard from my collegues that this forum is one of the best since they were able to receive answers on their questions regarding excel vba and I would like to try my luck on this. I have a test file which has time in and time out and remarks. User enters time in and time out, then remarks automatically appears. Program works fine but not on one thing. I have an incorrect output when time entered is 12:00 - 12:30. Normally the output remarks on this should be "on time" but what happens is that the output appears "0:00:00" which should not. Do you have any idea why is this so? and besides it only happens when 12:00 - 12:30 is entered. Thanks in advance.

Sincerely,

Becky