On Monday we started participating in this year’s Mystery Class through Journey North. Every Monday we’ll collect sunrise/sunrise data for our location. On Friday Journey North will provide us with the same data for 10 mystery sites. We’ll graph the data and try to figure out where the sites are by looking at what is happening to the photoperiod. Over time they will also provide lat/longs and then cultural data to help narrow down the locations. After 11 weeks we turn in our best guesses and they reveal the sites. There’s still lots of time if you want to play along!