Alright, lets say its Dec,31,1999, 11:59pm
The clock ticks...Hurray! New decade!
2000 to 2001 thats the first year
2001 to 2002 second year
2002 to 2003 third year
2003 to 2004 fourth year
2004 to 2005 fifth year
2005 to 2006 sixth year
2006 to 2007 seventh year
2007 to 2008 eighth year
2008 to 2009 ninth year
2009 to 2010 tenth year
Thats ten years.
Jan 1, 2010... start over.
Hahaha, no. 2011 starts the eleventh year. Since this year is not over yet it has not been a full ten years = decade. So, that’s 9 years and 12 days and 15 hours and 14 minutes so far.