Time Grime

The first wizards who figure out long-distance communication time differences are going to be thrown for a loop. They're going to end up working up huge tables full of wizard towers with times listed till some genius figures out a system. That system will probably not be time zones, but if they are, they'll be named after gods or guardian beasts or something.

On Measurement

Have you ever noticed how confident characters usually are about sizes and distances? I'm sure it's a skill that can be practiced, but it seems like even people thrust into adventure know how long 40 yards are or how big a 56-square-meter object is.