Answer
In addition to 6:00, the other times on the clock that represent opposite rays are approximately 1:38, 2:44, 3:49, 4:55, 5:59, 7:05, 8:11, 9:16, 10:22, 11:27, and 12:33.
Work Step by Step
Opposite rays are two rays with a common endpoint that point in opposite directions and form a straight line. As can be seen in the clocks below, these 11 times all include two rays with a common endpoint that are pointing in opposite directions and form a straight line: