新纪元时间（Epoch Time）与公元时间

很多时候，用Epoch Time来存储比其他时间格式会带来很多优势。但在客户应用端来讲，Epoch Time确是晦涩让人不之所以。 再次给出Epoch Time 到 公元时间的转换。
Code
namespace Framework
{
/// <summary>
/// To convert from epoch UTC (which should be 1/1/1970 00:00:00 UTC) to a human readable time,
/// you'll need to find the number of ticks between the DateTime class' base time (1/1/0001 00:00:00) to epoch time.
/// You multiply your epoch time by the tick resolution (100 nanoseconds / tick) and
/// add your base ticks (epoch time - base time). Then you pass the ticks into the DateTime
/// constructor and get a nice human-readable result.
///
/// long baseTicks = 621355968000000000;
/// long tickResolution = 10000000;
/// long epoch = 1225815911;
/// long epochTicks = (epoch * tickResolution) + baseTicks;
/// var date = new DateTime(epochTicks, DateTimeKind.Utc);
public class TimeConvert
{
/// </summary>
/// <param name="epochTime"></param>
/// <returns></returns>
public static string ConverEpochTimeToDateTime(long epochTime)
{
DateTime baseTime = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
long baseTicks = baseTime.Ticks;
long epochTicks = epochTime * 10000000 + baseTicks;

DateTime time = new DateTime(epochTicks);
return time.ToString("MMM dd yyyy hh:mm");
}

public static string ConvertDurationToTimeStr(long lDuration)
{
string format = "{0:D2}:{1:D2}:{2:D2}";
int hour, minute, second;
try
{
int duration = int.Parse(lDuration.ToString());

hour = duration / 3600;
minute = (duration - hour * 3600) / 60;
second = duration - hour * 3600 - minute * 60;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.ToString());
return string.Empty;
}
return string.Format(format, hour, minute, second);
}

}
}