Let's say I have this example df dataset
Order.Date       
2011-10-20       
2011-12-25       
2012-04-15      
2012-08-23       
2013-09-25       
I want to extract the month and the year, and be like this
Order.Date       Month       Year
2011-10-20       October     2011
2011-12-25       December    2011
2012-04-15       April       2012
2012-08-23       August      2012
2013-09-25       September   2013
any solution? anything, can use lubridate or anything