Removing date and Seconds from cells that include Date and time (x/xx/xxxx 12:34:56)

I have only one column (A) with thousands of cell entries. Each Cell contains a date and time. For example, Cell A1 = 1/24/13 18:45:22

I want the new cells to only have the time, but have the seconds removed (and not simply hide the seconds). This is because I'll need to run Conditional Formatting to find every cell with a similar time - but I only need similar times within the same minute...it doesn't matter if the seconds are off.

The new cell should just be A1 = 18:45

Any ideas how how to accomplish this? Thanks!



Side note:
The real reason I need this is because I need to find every entry that has the same time (with hour and minutes), which I figure I'd use conditional formatting for. My problem is that many entries have the same time but the seconds are off.

Example:
1/22/13 12:23:11
1/24/13 18:45:22
1/24/13 18:45:36
1/26/13 22:33:41

In this example, I'd want Conditional Formatting to highlight cell A2 and A3 because they have the same time of 18:45 (not including the seconds). I figured the best way to go about this would be to remove the date and remove the seconds, and run the search that way. however, any suggestions to accomplish my same end goal without deleting the date and seconds would be just as helpful. Thanks!

Thanks. That worked, except I rant into the problem where I didn't realize so many times are similar in later cells. Would you know how to remove the seconds (not simply hide) while still keeping the date in place...so it would read 1/24/13 18:45 instead of just 18:45

Thanks everyone!