Q:

To set a Blank date in a Apex formula

I have a simple formula date field which I want to return a BLANK DATE (not a NULL) if the criteria is false. I tried many syntax, but all failed

A:

There is no blank date, rather you can get an empty field value.
You can use this to have an empty(no date value) field: 
IF( 
 Condition, 
 NOW(), 
 NULL 
)

A:

There is nothing called a blank date to my knowledge.
It would be either one of the below two
I) Any date 
II) Null
You cannot assign any other value apart from these two!

