The Filter Tool, which is part of the Preparation tool category, separates your data into 2 output streams, True and False, based on a basic filter or custom expression.
The Date Time Now Tool is part of the Input Tool Category and it is actually a macro encapsulating other Alteryx tools. To use it, only one selection needs to be made: an output format. That's it, then you can go about your business. You also have the option to output the time with that date.