Integer time such as 09:00,09:30,10:00,12:00,prompt time

[jiaotashidiyangwangxingkong]

Now use the computer to browse the network content and work, always forget the time, a moment of inattention to forget the time, I need to be able to point in the integer time such as 9:00 , and then in a pop-up window to tell me the current time!