soeben im Voxilla-Forum gesehen:
The syntax is start=<mm>/<dd>/<day>[/HH:[mm[:ss]]];end=<mm>/<dd>/<day>[/HH:[mm[:ss]]];save=[/[+|-]HH:[mm[:ss]]]
day is 1, 2, 3, …, 7 (for Mon, Tue, …, Sun), or 0 for fixed to the date dd.
The entry for most of the US is...