I am trying to get the free/busy information using zmmailbox and getRestURL.
This works well but the times are not corrected according to my timezone:
zmmailbox -z -m $ACC getRestURL "/calendar.ifb?start=0d&end=5d"
This returns a VCALENDAR showing when the account ACC is busy the next 5 days.

I tried adding a timezone parameter to the url like so: tzid=Europe/Brussels.
Without success.
Thanks in advance for any insight.