How do I parse out a timestamp ISO format into a date field

How do I parse out a timestamp ISO format into a date field? This is how the field looks:

Timestamp ISO Format 2008-10-08-12.13.52.412000

Here is the description of the field:

Field From To Length Type Description
XXXXXXX 57 82 0 Z Timestamp ISO Format

I need to get the 2008-10-08 into a date format so that I can match it and pull in specific dates only.

Thank you.