Milliseconds to System.DateTime

HI

I am trying to convert a millisecond value i get from a calendar event to date time

I get it with an offset of 1hr (earlier than should be)

public static DateTime FromUnixTime(long unixTimeMillis)
{

        var epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);

        epoch = TimeZoneInfo.ConvertTimeFromUtc(epoch, TimeZoneInfo.Local);
        return epoch.AddMilliseconds(unixTimeMillis);
    }

Suggestions? How to do this so it gives the correct time?

Regards

M.R.