|MATLAB Function Reference|
c = calendar
returns a 6-by-7 matrix containing a calendar for the current month. The calendar runs Sunday (first column) to Saturday.
c = calendar(d),
d is a serial date number or a date string, returns a calendar for the specified month.
c = calendar(y,m),
m are integers, returns a calendar for the specified month of the specified year.
displays the calendar on the screen.
reveals that the Space Age began on a Friday (on October 4, 1957, when Sputnik 1 was launched).