private void ResetTimePeriod(object obj)
 {
     DisplayPeriod.ResetSelectedDate(DateTime.Now);
     MessagingCenter.Send(this, MessagingString.UpdatePeriod);
 }
 private async Task SetDate(object newDate)
 {
     DisplayPeriod.ResetSelectedDate((DateTime)newDate);
     MessagingCenter.Send(this, MessagingString.UpdatePeriod);
 }