Change photo dates based on file name
I've brought several gigs of photos into iPhoto (version 9.5.1, running on Mavericks) from PC. The dates shown in iPhoto are incorrect. But each file was named with the following convention:
20040228 - My First Game of Rugby
The first 8 characters always follows the format YYYYMMDD.
Is there a way to change the photos' dates in iPhoto based on that 8-digit prefix?
Thanks!