lastDayOfMonth method
Returns a new DateTime
in the last day of the given month
Implementation
static DateTime lastDayOfMonth(DateTime month) {
final date = month.month < 12
? DateTime.utc(month.year, month.month + 1, 1, 12)
: DateTime.utc(month.year + 1, 1, 1, 12);
return date.subtract(const Duration(days: 1));
}