First day of the week
I'd like to have Monday as the first day of the week, this is pretty much common in Europe and I think it is not a big deal to develop.
This can be done by setting up a Google Calendar integration which will change the Base calendar to match your current Google Configuration!
Khizer Inayat commented
Me too as in saudi arabia we have sunday as our first day. base should let us change the first working day of the week.