note summer time change: some locations but not others

As a reminder, we are in that period of the year when some regions 
have just made their "summer" or "daylight" adjustments to clock time, 
while others have yet to do so.  Of course, there are other locations which 
do not make a summer time adjustment.
     I mention this only because I attended a few telephonic TC meetings 
this morning in which mild confusion occurred.   For example, BST started 
in the UK and CEST in Belgium this last weekend;  daylight time will start 
in Canada and the US, and end in Australia, on 2 April.   Some attention to 
the international time conversions for the next week or so may be helpful.
     Regards  JBC