I underestimated how long it would take me to finish my homework assignment for the C/Unix programming class I'm taking at Harvard. All the problems looked so simple---I figured they would take me at most an hour to finish. The assignment was due midnight this past Saturday and I started working on it at 12 PM Saturday afternoon. At 5 AM Sunday morning, after spending 17 hours non-stop, I passed in the assignment (online submission). Lesson learned!
Sounds like you did a djt 😀