It's getting spooky

For a considerable number of days in a row, I randomly glance at my clock and it says 15:21.

Oracle is stocking me!!!!!!

Stocking you full of...?

s/stocking/stalking/g

Inner clock?

What is the probability of you randomly looking at the clock one time and it being that exact time every day vs the clock always being that time no matter when you look at it?

For me it would be 1:480 (8 hours)^<num_days>

I'm probably missing a joke though.

it's 15:21 again... wtf