private async Task InitDeviceTime()
{
// not sure why the band doesn't report timezone in a standard way, but the time returned by
// the band is in UTC (as per the function name) while the timeZone is a collection of properties
// with the actual time zone represented as a raw string...
var timeZone = await _client.GetDeviceTimeZoneAsync();
var time = await _client.GetDeviceUtcTimeAsync();
// ... luckily we have the "ZoneOffsetMinutes" property which can be used to offset the time to the correct time that is displayed on the band.
time = time.AddMinutes(timeZone.ZoneOffsetMinutes);
DeviceTime = time;
// start a timer to update the current time (we cheat by using a local timer
// instead of polling the device)
_timeUpdater = new System.Timers.Timer();
_timeUpdater.Elapsed += _timeUpdater_Elapsed;
_timeUpdater.Interval = (60 - time.Second) * 1000;
_timeUpdater.Start();
}