I was talking to a lady who phoned in for tech support.. wow.. I should do a tech support thread. But I asked her as part of standard troubleshooting:
"Ma'am, what time zone are you in?"
"....American time..."
"No, ma'am. What time is on your clock right now?"
(at this point I was going to do the math to figure it out)
"Its right now"
.....
"What state are you in?"
"Illinois"
"Okay, that would make you in the central time zone"
"No, I'm in America. AM-ER-I-CA"