A user reached out to complain that her dates are off on tasks that are completed later in the day. She said: "My progress for the night was assigned to tomorrow's date on my course progress report instead of today and I'm unable to find a way to adjust my timezone. Can it please be set to EST? Thank you!"
The script that calculates the progress runs in the server timezone (UTC), so the completed tasks are assigned to the day based on that timezone. Working late makes the task show complete the other day.