The Mayans has different calendars and concepts of time. One of their time units the Long Count turned over every 7,885 solar years.
I thought of that too. Wonder if a doomsday cult will grow up around this, predicting the end of the world when the clock hits 10K?
Also, this civ has been going on a while now, did he start the clock set to 5K? 6K? How much time have we got left, I need to know how much beer to buy...