Abstract: Systems, devices, and methods for operating one or more doors of an enclosure from an open position to a closed position are disclosed. In particular, the present disclosure relates to the opening and closing of a pair of curved double-doors of a float pod. Such opening and closing is achieved via a door hinge attached to the float pod. In some embodiments, the door hinge includes two arms that rotate independently around a central, pivoting shaft. Each of the pair of curved double-doors is attached to one of the two arms, thereby resulting in lateral, sliding movement of the doors towards and away from each other upon rotation of the two arms.