Hi!
I think you can. Try this:
https://wpcal-archive.firetree.net/2008-May/003147.html
Works like magic…
Hector
I can confirm that the link does indeed work.
I’d also make one addition to the instruction to remove the “:” after the start date.
On line 384, remove the “:” from the end of the %DATE% variable.
You can see the Calendar widget with the from and to date here.