Students are granted a “grace period” of 24 hours for writing assignments. You have 24 hours from the due date/time to submit your essays with no penalty, but you forgo getting my comments on the assignment.
After the 24 hour grace period is up, students lose one half letter grade for every additional 24 hours the assignment is late:
Two days late: A- highest possible grade; no comments
Three days late: B+ highest possible grade; no comments
Four days late: B highest possible grade; no comments
…and so on.
If you need an extension, and are granted one, there is no grace period beyond the extended due date and the losing one half letter grade per day begins as soon as the deadline is up.