Friday, 13 February 2009, is yet another Friday the 13th.

When written in MM/DD/YY format,

`is a BAD (Basic Arithmetic Date).`

02/13/0902/13/09 ... sqrt(sqrt(13 + sqrt(9))) = 2

Triskaidekaphobiais the fear of the number 13 in general andparaskavedekatriaphobiais the fear of Friday the 13th.This Friday the 13th fell between the birthdays for Abe Lincoln and Charles Darwin on the Feb. 12th and Arizona's birthday on the 14th.

MathBabbler spends a lot of time in the Unix world and on 2/13/2009 at 4:31:30pm MST the Unix time hit the value

`(which is the number of seconds since 1/1/1970 00:00:00).`

1234567890

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 13 February 2009

This work is licensed under a Creative Commons Attribution 3.0 United States License.