difference between 2 dates flutter code example

Example 1: how to subtract dates in flutter

//the birthday's date
 final birthday = DateTime(1967, 10, 12);
 final date2 = DateTime.now();
 final difference = date2.difference(birthday).inDays;

Example 2: calculate time difference with now in flutter

Jiffy("2011-10-31", "yyyy-MM-dd").fromNow(); // 8 years ago
Jiffy("2012-06-20").fromNow(); // 7 years ago

var jiffy1 = Jiffy()
    ..startOf(Units.DAY);
jiffy1.fromNow(); // 19 hours ago

var jiffy2 = Jiffy()
    ..endOf(Units.DAY);
jiffy2.fromNow(); // in 5 hours

var jiffy3 = Jiffy()
    ..startOf(Units.HOUR);
jiffy3.fromNow();