Friday the thirteenth… times two.

I wonder how often February 1 falls on a Monday Sunday in non-leap year?  I ask this because on February’s that meet these conditions, there are always two consecutive Friday the Thirteenths (February 13 and March 13 are both Fridays).

About Jamie Todd Rubin

Jamie Todd Rubin writes fiction and nonfiction for a variety of publications including Analog, Clarkesworld, The Daily Beast, 99U, Daily Science Fiction, Lightspeed, InterGalactic Medicine Show, and several anthologies. He was featured in Lifehacker’s How I Work series. He has been blogging since 2005. By day, he manages software projects and occasionally writes code. He lives in Arlington, Virginia with his wife and three children. Find him on Twitter at @jamietr.