Rouding up times. e.g. 7:33 --> 7:35

[Guest]

I have a clumn of times. How do I round them up to the nearest multiple of 5
minutes? I know of ROUNDUP.. but how do I do it with times?

Eg.
5:03
5:05
5:06
5:08
5:09
5:09
5:09

goes to:

5:05
5:05
5:10
5:10
5:10
5:10
5:10

 

[JE McGimpsey]

One way:

=CEILING(A1,"0:5:0")