Home screen clock shows wrong time

The ICS interface shows the current time/date - which is nice - however if the rpi3 doesn't have internet access the initial time shown is the build time for the image and the clock advances linearly from that point and doesn't jump to the correct time (I assume it tries to find an ntp server and fails)

If at the AMM the cards don't have network access the time/date shown will be inaccurate unless you ssh in and manually correct the time.