Just choose any one date and use it on all forms. They should match.
It does not matter which one you choose. It could be the first one or the most recent one. There is no clear guidance by government on which one to use.
So, just choose any one and use it on all forms.
Can i put 1 June 2017 For both “Date of leaving India:” & "Residing in USA since: " ??
It is mentioned in FAQ:
In the National verification form, the date of leaving India is the first time of leaving India or last ( or most recent)?
It is a pretty vague question. I entered my most RECENT date of leaving India.