15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 .
the age is years and days.
the result in years is not totally exact, because a year can have 365 or 366 days. the age, which is the time span between one date and another, is calculated as x years, independent of the number of days of a year. if there is a leap day between the current year and the year before, one day more is counted. example: from may 1. 2013 to march 1. 2017, there were 3 years and 304 days. whereas from may 1. 2012 to march 1. 2016, there 