Space and Time
It's All Relative
Mass Appeal
You Light Up My Life
Everyday Einstein: Black Holes
Time Travel Kit
Welcome to the 4th Dimension!
Where are you? I'm on an aardvark on the corner of Bern St. and Ulm St.! That doesn't answer my question!
According to Einstein, you need to describe where you are not only in three-dimensional space* — length, width and height — but also in time.
Whoa! Check this out!
Time is the fourth dimension. So to know where you are, you have to know what time it is.

Your complete answer should be "I'm sitting on a 4-foot-high aardvark at the northeast corner of Bern St. and Ulm St., and it's July 1st, 2002, at 1:23 p.m. on my watch." Einstein called a description that used four dimensions an event.
So now answer the question... Where are you?
*By "space," we mean the space that is all around us, not just outer space.