A digital clock shows 20:55 in seven-segment digits. What does the display appear to read in the dashed mirror?

In the mirror the order of the characters is reversed (5 5 : 0 2) and each digit is flipped: a flipped 5 looks exactly like a 2, a flipped 2 like a 5, and 0 is unchanged. So 5 5 : 0 2 reads 2 2 : 0 5. 55:02 reverses the order but forgets to flip the digits; 25:02 flips only one of them.