If you check this section it mentions defining a variable *8-30-59* like so:
define variable *8-30-59* = make(<time-of-day>, total-seconds: encode-total-seconds(8, 30, 59));
However, I think variable names must start with a non-number because I get a warning when trying this example.
I should also note I'm using Open Dylan 2013.1
Would you accept a patch to fix this and use a valid variable name?