To move vessels through time, drag the time slider back and forth. Tap your arrow keys to move the time slider in 10 minute increments, and hold shift + tap to move it by 1 hour.
You can extend or reduce the timeline by:
Changing the 'Time' filter in the top navigation
Clicking ‘Show more history’ in vessel history
You can also jump to a point in time by:
Clicking on the vessel track on the map
Clicking on an event in vessel history