In my neck of the woods there is a helicopter which flies over my house several times during any 24 hour period (even at night, early morning).  At first I thought nothing of this because my house is on the flight pattern to Nashville International Airport. 

After a few weeks of observing this helicopter, I began to see a pattern.  This machine always flew in from the east and flew out toward the west.  Seeing a challange here, much like finding lottery patterns, I began noting the time when this helicopter flew overhead.  While the exact minute was varied, there was a hourly time reference when I could expect to see this helicopter. So far I have not been disappointed.  This helicopter flies every day, seven days a week, 52 weeks a year.  Where is Jesse Ventura when you need him.