For the hour, I think it's that :
Put a hour and date command on the front panel (located in the numéric panel).
Then right clic on the command -> properties -> format and precision.
Clic on the advanced mode radio on the botom of the bost, scroll down in the list, and you can see that you have something like "use monday as the first day of the week" (perhaps not exactly that, my labview is in french), with the corresponding code "%W" ...
Is it what you'r looking for???
I search the answer for the date of the week.
Regards.