No. Also, I don't have have a sim card yet. Just use it with wifi. Could that be related? A few minutes ago I tried to go to settings and it would not open. That is also strange. Have rebooted and the time appears to have advanced about 15-20 minutes. Strange again! But settings now works and I have reset the time.

EDIT: I'm wondering if I had mistakenly entered the time when I had originally set it, confusing the 24 hour clock with 12 hour one. Although that doesn't explain why settings application wouldn't work or why the clock suddenly advanced about 20 minutes for no reason.