To view past days in the Timeline, you can simply click on the ‘<‘ symbol next to “Today”.
If you click on the date at the top, it will bring up a Calendar so that you can choose a specific date to view. Once you reach the farthest point on the Calendar to view, you can then use the ‘<‘ symbol to continue looking back at previous dates.
The Timeline shows the current location on the map at the top of the Timeline. You can then enter into the location as usual by clicking on the entry in the Timeline.