Possibly the only really useful int extension method I’ve ever written.

Convert an epoch (unix date) to a formatted string:

    public static class DateExtensions
    {
        public static string StringDateFromUnixTime(this int unixTime)
        {
            var epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
            var dt = epoch.AddSeconds(unixTime);
            return dt.ToString("yyyy-MM-dd hh:mm:ss.fff");
        }
    }