Fixed bug in time difference calculation.
Fixed bug in time difference calculation.

bitemyapp/roshask,bitemyapp/roshask,rgleichman/roshask,acowley/roshask,akru/roshask,aa755/roshask,rgleichman/roshask,estump/roshask,acowley/roshask,estump/roshask,akru/roshask,aa755/roshask