Century leap year - wikipedia, In gregorian calendar year divisible 400 due --century leap year ( called century leap year), intercalation . https://en.wikipedia.org/wiki/Century_leap_year 2017 calendar | free & printable | agelesshistory., Free printable 2017 calendar yearly monthly format. 2015/2016 calendar - agelesshistory... http://agelesshistory.com/calendars/