Space Travel Times Calculator
Calculate travel times for space travel, both relative(Shipboard Time) and proper time for a stationary reference frame (Observed Time). This assumes the object is Accelerating at a constant speed (expressed in G's), coasting at a Maximum Speed for a nonzero duration, then Decelerating so as to produce the same G's in reverse. (The Acceleration/Deceleration phases are equal).
This cannot accomodate situations where the maximum speed is not reached and sustained.