Get the last non-empty cell in a column in Google Sheets

Question

I use the following function

=DAYS360(A2, A35)

to calculate the difference between two dates in my column. However, the column is ever exp

Answer 1

The way an amateur does it is "=CONCATENATE("A",COUNTUNIQUE(A1:A9999))", where A1 is the first cell in the column, and A9999 is farther down that column than I ever expect to have any entries. This resultant A# can be used with the INDIRECT function as needed.