Dotnet authentication clock skew.

/// <summary>
        /// Gets or sets the clock skew to apply when validating a time.
        /// </summary>
        /// <exception cref="ArgumentOutOfRangeException">If 'value' is less than 0.</exception>
        /// The default is <c>300</c> seconds (5 minutes).
        [DefaultValue(300)]
        public TimeSpan ClockSkew
        {
            get
            {
                return _clockSkew;
            }

            set
            {
                if (value < TimeSpan.Zero)
                    throw LogHelper.LogExceptionMessage(new ArgumentOutOfRangeException(nameof(value), LogHelper.FormatInvariant(LogMessages.IDX10100, LogHelper.MarkAsNonPII(value))));

                _clockSkew = value;
            }
        }