Issue about queue items

Hi everybody. I’m studying about queue ordenation and i have this queue example below.

image

But i noticed in UiPath documentation that deadline can be as YYYY/MM/DD.
But in Add Queue Item activity i can’t put the date as the above example.
I generate any date but only in string format and the label in activity requires an datetime variable. So my queue look like this:

image

And now i’m confused because i don’t know if the minutes, seconds and hours in deadline make some diference when the robot goes process.
Someone know how to create the datetime variable without the timestamp?
Because if it’s not possible do this, so the documentation is wrong, i think.
Sorry about my english and thanks in advance!