Microsoft skips Windows 12, releases Windows 13 on Friday the 13th
Microsoft is skipping Windows 12, because in some countries number 12 has negative connotation. This comes after realising number 6 also had negative connotation in some countries (nobody wants to call it for example "Windows Sex"). Release date is pushed back to 101th birthday, which falls on Friday, of Wednesday Addams, notorious fictional character known to have been both on Friday the 13th.