overslept

i woke up because i felt rested. which was odd, as i knew i couldn't have slept the 8 hours i need to feel rested because i'd got to bed rather late. so i turned over and looked at my alarm clock. 7.30. ok. and then it hit me. 7.30! i was supposed to have left ten minutes earlier and i had a lesson at 8am. just perfect. amazingly, i was actually in class at 8.05 - that's including a 15-mn bus ride into town and a 5-mn walk to the relevant building. it did ruin the rest of my day, though, which is pretty typical considering i'd apparently slept what i needed.