On Apr 4, 2008, at 10:08 AM, Kinder, Kevin P wrote:

Unless I'm missing something, there's no way to tell it to switch
to DST
on the second Sunday in March and switch back on the first Sunday in
November.

You mean, like:  EST5EDT,M3.2.0,M11.1.0     ?

Take a closer look at the last box in that IBM document.  The spec is
based upon relative week numbering.  Once you've coded it, its
good ... until the next whimsical change by Congress.

   Richard Sims