how to convert string date number to double?

I used 'datenum' to convert date to number. And then used datestr to see the date and the result is as follows.<123x11 char>

val =

01-Jan-1961

02-Jun-1965

.....

How can I convert this character to double?

Answer 1

[Azzi Abdelmalek]

datenum(val)

Or

Datevec(val)