// Each year between 6 February 2014 and 10 August 2017: var result = eachYearOfInterval({ start: new Date(2014, 1, 6), end: new Date(2017, 7, 10) }) //=> [ // Wed Jan 01 2014 00:00:00, // Thu Jan 01 2015 00:00:00, // Fri Jan 01 2016 00:00:00, // Sun Jan 01 2017 00:00:00 // ]