+ In particular notice that it is a bad idea to use default wxDateTime
+ constructor from hour, minute and second values as it uses the today
+ date for the date part which means that some times can be invalid if
+ today happens to be the day of DST change. For example, when switching
+ to summer time the time 2:00 typically doesn't exist as the clocks jump
+ directly to 3:00. To avoid this problem, use a fixed date on which DST
+ is known not to change (e.g. Jan 1, 2012) for the date part of the
+ argument or use SetTime().
+