It’s fairly common for me. Average first freeze here is 10/22 with the hard freeze date of 10/28. The dates I’ve recorded both on the same date are: 11/12/05, 10/14/06, 10/20/08, 10/19/09, 10/13/12, 10/31/14, 10/17/24. The dates I have that there were back to back dates (likely the same night but I’d have to dig further into my records to see the times of the recorded lows) are: 11/1-11/2/10, 10/17-10/18/15, 11/3-11/4/21, 11/1-11/2/23, 10/9-10/10/25.