heh...no, haven't made that one yet...
Flew across the dateline when I was 7 on my way to Okinawa with my parents, came back when I was 10 aboard the USS Breckinridge..kinda doesn't count when yer a kid tho..
Crossed the Equator and Dateline (seperately) in '73 on the CA Maritime Academy training ship "Golden Bear" (ex-Del Orleans/ USS Crescent City)
Went thru the ditch in '75 on the same ship, spent a week anchored on the Atlantic side because the snipes forgot to jack the shaft during transit, shaft warped, broke some blades off the turbine...definitely an educational experience!!