Care sharing what date did you get this fare for all flights same day?
None are truly same day. You'll leave NY around noon and get back around 24 hours later. My flight was Oct 5-6. Here are some examples of similar availability at $763 for this route (other routes exist but this is the best from NY IMO). Date is for outgoing flight assuming the next flight back:
9/8 9/9 9/15 9/16 9/17 9/22 9/23 9/29 9/30
10/1 10/5 10/6 10/7 10/13 10/14 10/20 10/21 10/26 10/27 10/28 10/29 10/30 10/31...
Last fare date is thanksgiving