This isn't entirely related, and it's for a totally different reason, but analog watches in advertisements almost always read the same thing, too: 10:10.[1]
Supposedly it's because the watch hands form a 'smile', and this is supposed to evoke feelings of happiness in potential buyers.[2] I'd never noticed it before, but ever since someone pointed it out to me, I've noticed it in _every single_ watch ad I've seen.
[1] http://nymag.com/images/2/daily/intel/08/01/31_eliandtom2_lg... [2] http://www.ubr.com/clocks/frequently-asked-questions-faq/clo...