Timezonecist
When you assume another persons time-zone, you're timezonecist.
You: ''You're Eastern time. I'll see you at 8.''
Someone: ''Did you just assume my timezone? I'll have you know I'm Central not Eastern. You're Timezonecist!''
Someone: ''Did you just assume my timezone? I'll have you know I'm Central not Eastern. You're Timezonecist!''