Now that java.util.Date is almost entirely deprecated and GWT does not emulate the new util java.util.Calendar I am not sure if it's a big fun to work with time on the GWT client side.
I know that there are "options" but those were not maintained over years. Also the GWT CalendarUtil is entirely relying on java.util.Date and therefore has to be enjoyed with care.
So what should I use on the client side for time handling in GWT?