Rounding Timestamp

Hey! Just wondering if anyone knew of a way to round the timestamp.

I use "Rename" with "date created" with time "HHMM" for creating revisions of files I send to clients.
It returns 1057 which is just too nerdy & hard to read (as they imagine me typing it myself). Any thoughts on how I could round it to 10 min or 15 min intervals?

Thanks!

Can't think of an easy way off the top of my head. Seems like a script would be needed here.

I guess I just need to replace the last digit with a "0" and that would round it to 10 mins...