Special (Mathematical) Dates !
Did you notice and/or celebrate earlier this month on Dec 13? The date was 12/13/14 ! There are only 12 of these ‘consecutive-whole-number’ days each century (!), and this was the last one in most of our lifetimes!!* (Anyone plan to live until 01/02/03? [That’s 2103, mind you.])
OK, roll your eyes if you want :-). But these kinds of interesting dates are actually fun for lots of number-types – and not just hopeless nut-cases like me. (And they can also grab young students’ interest . . . but I digress).
It is my own opinion that every day of the year is mathematically special in some way or other (see #1 below in Wild Cards), but be that as it may, there are a few very interesting days coming up in 2015, including one that arrives only once a century!! To see a few, visit 2015 Special Days.