+# Some systems implement leap seconds by amortizing the leap second
+# over the last few minutes of the day. The frequency of the local
+# clock is decreased (or increased) to realize the positive (or
+# negative) leap second. This method removes the time step described
+# above. Although the long-term behavior of the time scale is correct
+# in this case, this method introduces an error during the adjustment
+# period both in time and in frequency with respect to the official
+# defintion of UTC.
+#