check_parse 2008-02-14 bad
check_parse '2008-02-14 20:30:45' '2008-02-14 20:30:45 +0000'
check_parse '2008-02-14 20:30:45 -0500' '2008-02-14 20:30:45 -0500'
-check_parse '2008-02-14 20:30:45' '2008-02-14 20:30:45 -0500' EST
+check_parse '2008-02-14 20:30:45' '2008-02-14 20:30:45 -0500' EST5
check_approxidate() {
echo "$1 -> $2 +0000" >expect