The people with whom I share an office still write/maintain a FORTRAN program.
I cut my proverbial teeth on that*, except that I don’t actually write code. That class was 26 years ago and I assume it was already old, even then. (The textbook was called “Turbo Pascal” which we weren’t actually using.)
*Upon further reflection, the “eureka!” moment came when I wrote out a nested If statement for Lotus 1-2-3; that was for the “Intro to Computers” class that was the prerequisite for Pascal.