This will be a short post. When I was updating my network diagram – using OmniGraffle – which I talked about here, I used a variable to represent the modified date, and one to represent the created date. But they both only did day / date and not time. It took me a little bit to figure out time. So this is to remind me, and perhaps to help you!
default is <%CreationDate%> or <%ModificationDAte%>
So you change things like seen below.
Creation date / time – <%CreationDate %m/%d/%y – %H:%M %>
Modified date / time – <%ModifiedDate %m/%d/%y – %H:%M %>
And this will look like what you see below in the date and revised fields.
Hope that this helps!