photos not showing in the correct time order in the timeline
On a recent holiday I was using both my iPhone and my dSLR to take photos. When I returned from holiday I noticed that the time on my dSLR was wrong. After I had imported the photos into the photo mac app I changed the timestamps to the correct one.
Unfortunately not all of the photos reordered themselves correctly in the timeline. They are no-longer in time order, near time order, but not perfect.
For example the first photo in the timeline currently starts at 12:30, about 5 photos later the timestamp is 11:20.
How do I get my photos to display in the correct time order in the timeline?
MacBook Pro (Retina, 13-inch,Early 2015), OS X Yosemite (10.10.3), Photos version 1.0 (209.52.0)