Setting a Date field to NULL in Designer Workflows

I have been wondering how to do this for quite some time now, and came up with a way!

Create a new calculated field, and set it to ="", and make it a date/time field.

In Designer, set the field you want to be blank to that calculated field.

I thought it would be simple to set it to NULL in SPD, but no, can't really do it at all.

Now, we have to figure out how to set a people-picker field to NULL and we'll be all set.