This morning I was trying to process some images using mapillary_tools and was using the --local_time flag which states that images without time zone should follow the computers time zone.
It seems that it will just take the computers current offset from UTC. That means that my images which was taken when daylight savings time was in effect are attempted geotagged as if it is not in effect failing the process (fortunately).
Messing around with offsets is a pain so the --local_time is awesome. I will just wait for DST to go into effect to process these images