Summing hours worked based on date criteria

edited 12/09/19 in Smartsheet Basics

I have reviewed the threads related to this but am currently getting an invalid value error when attempting to sum a column based on a date range. Here is what I have

=SUMIFS({Ford Chicago Accounting Range 1}, {Ford Chicago Accounting Range 2}, @cell < DATE(2019, 16, 8))

Where Range 1 is the hours, Range 2 is the dates, What am I missing?