I mean oddities mostly. I corelate the area code of my highschool love, and often the birthday of another. It has no significance beyond a few pleasant memories, but it is just one of life's oddities for me. Do you experience similar oddities?
I always have a little chuckle at 13:37. It's one of those times that I irrationally feel I see more often than any other time, but it's just that I notice that specific set of numbers more than any other... or maybe I check the time at exactly the same point each day because my body clock is 1337!
12:34 is known as “simulation time” in my house, the time we notice the most out of sheer happenstance. Clearly the simulation has a hard time coming up with anything better when I look at the clock.
17:38 is an inside joke with my friend so don't know if that counts. 13:37 always makes me smile.