Let the 8 o'clock X minute hand coincide with the minute hand, and then

So: x-x 12=40, and the solution is: x = 437 1 1.

That is 437 1 1 go out at eight o'clock.

Set 2 o'clock and 2 minutes, and the direction of the hour hand and the minute hand are opposite.

So: y-y 12= 10+30, the solution is: Y = 437 1 1.

That is, go home at two o'clock. 437 1 1

So14,43711-8,43711= 6.

So it took six hours.