public bool IsInRange(DateTime dateTime)
{
DateTime checkFrom, checkTo;
int fromDeltaYears = DateTime.UtcNow.Year - From.Year;
int toDeltaYears = DateTime.UtcNow.Year - To.Year;
if (Annual && fromDeltaYears >= 0 && toDeltaYears >= 0)
{
checkFrom = From.AddYears(fromDeltaYears);
checkTo = To.AddYears(toDeltaYears);
}
else
{
checkFrom = From;
checkTo = To;
}
return(dateTime > checkFrom && dateTime < checkTo);
}