getDaysDifference static method
Returns count of days between two dates.
Time will be ignored, so for the dates (2020, 11, 18, 16, 50) and (2020, 11, 19, 10, 00) result will be 1.
Use this method for count days instead of
a.difference(b).inDays
, since it can return
some unexpected result, because of daylight saving hour.
Implementation
static int getDaysDifference(DateTime a, DateTime b) {
final straight = a.isBefore(b);
final start = startOfDay(straight ? a : b);
final end = startOfDay(straight ? b : a).add(const Duration(hours: 12));
final diff = end.difference(start);
return diff.inHours ~/ 24;
}