or download this
C:\ppm search Date::Calc
Downloading ActiveState Package Repository packlist...done
Updating ActiveState Package Repository database...done
...
Downloading Date-Calc-6.3...done # makes no difference here,
+ but sometimes
Unpacking Date-Calc-6.3...done # repositories will have di
+fferent vers.
Generating HTML for Date-Calc-6.3...