So I am submitting applications for this cycle (Fall 2021). I graduated from school a few years ago and did occasional part-time work as a research assistant in college. In my application, I recorded September 2014 to September 2017 as a research assistant. Though I just realized, I was a research assistant from January 2015 to September 2017. So I was one semester off. This was an honest mistake, and since this was 5 years ago and part-time, I was a little fuzzy on the dates to be honest.
Should I reach out to programs pre-emptively? I don't want them to think this was intentional.
EDIT: Fwiw, the application was submitted about a month ago.
EDIT2: I ended up writing a brief email like the one in the comments section. Will update on outcome