hcm atom feed validity

Summary:

Hi,

I am new to HCM atom feeds and was unable to understand few points:

Content (please ensure you mask any confidential information):

how long does the newhire feed keep returning new employees? if we hire an employee in June, and we run the newhire feed everyday without adding criteria on date, will this new employee appear in every response?

I have another example where I created several employees for testing purposes. I keep getting their data in the newhire feed, however in empassignment, I am only getting the assignment details of the last employee created.

I would appreciate any input.