One of my pet peeves is the habit some people have of putting the due date on their calendar as the date when they should begin to work on a task. “Please submit before October 31” to them always means “Remember on October 31 that you were supposed to be working on this.” Of course, it always turns out that the paperwork they had to submit was due at 8 am on the deadline date, and they start sending out pitiful emails at noon, enquiring how it all happened.
I’m not talking about students. These are adults. If you have a document that takes 3 minutes to fill out, why not fill it out when you receive it instead of entering it into your calendar and then waiting until the absolute last second to do it?
This is particularly dumb since due dates for things tend to cluster around the 15th and the end of the month. You regularly end up with an avalanche of things that need to be done immediately if you confuse “due date” with “to do date.”