Question

why in watch shops all the watches are shows 10:10

Answer 1

the hands not overlapp so they are totally clearly observable and the arrangement of hands is symmetrical which people find very pleasant

Answer 2

First things first, let's get the myths out of the way. There are plenty of people out there who think that clocks in advertisements and in-store displays are set this way to memorialize Abraham Lincoln/John F. Kennedy/Martin Luther King Jr. because that was the time at which they were shot or died. In reality, Lincoln was shot at 10:15 p.m., and died the next morning at 7:22 a.m., JFK was shot at 12:30 p.m. CST and was pronounced dead 1 p.m. and MLK was shot 6:01 p.m. and pronounced dead at 7:05 p.m.