The DayClock is the invention of Mark Pierce and John Kallestad, of Incline Village, Nevada. The idea for the ultimate retirement gift was born in the heart of the Black Rock Desert of Nevada in the middle of July. Mark and John had been dirt sailing for several days knowing their wives would be showing up on Friday.
The problem was they didn't know what day it was and their wristwatches only gave them the date, which didn't help. After several beers around the campfire the idea for the DayClock was born. A result was a clock, which gave them the only information they required--what day, it is.