You have to really have the ability to plan ahead to pull this one off, but I told my children when they were tiny that Friday the 13th was always a really lucky day for me. (It helped that it was true.) So...they grew up checking the calendar at the start of every year, finding all the Friday the 13s, marking them, anticipating them...occasionally torturing their friends as they got older...fun stuff.
No "triskadekaphobia" allowed at my house!
(Apologies if I spelled that wrong.)