I get this sometimes as well, few weeks ago a girl inadvertently glanced at my watch a and exclaimed 11:11(pm), then I got the same thing for a week or so after that
early this year I was dreaming and a character in my dream told me the time, I woke up soon after and it was 2 minutes after the time the dream character told me
we have a perfect internal clock, I believe in signs too, they don't have to be important, like I'll be thinking of going to a certain place or do a certain activity and a few mins later I'll see people randomly doing that activity in the background of a video on youtube or something

-zershen