duration.mtimes
duration: C = times (A, B)
Matrix multiplication for duration arrays.
C = mtimes (A, B) is the equivalent of the
syntax C = A * B and returns the matrix
multiplication product of input arrays A and B, one of which
must be a numeric array and the other a duration array.
The columns of A must equal the rows of B and the size of C is determined by the rows of A and the columns of B.
Source Code: duration