Error determines new ending date!!!

I managed to make nearly 300 pairs of shorts last week which is more than twice what I normally do in a week. I had hoped that I could be finished in exactly one week. However, I had set my numbers based on finishing on the 18. However, the 18th is one day beyond a year, so I would have had to make 100 pairs a day to finish on time. On thursday, I decided to try to make 100 pairs and started to work at 7am. By 3pm I had 101 pairs of shorts ready to be hemmed and elastic put in the waist, however from that point I still spend about 3 minutes per pair. So, I was looking at another 5 hours to finish the shorts. Well, I saved them till Thursday and decided that there was no way I could finish by midnight on the 17th, so I decided to slow down a little and get done by the end of this week. I have about 340 pairs of shorts left to make and plan to finish these by Saturday and I am sure I will be able to do this, even though it is way more than double what I normally make. So, I will be finished by Saturday, January 22. Yeah!!!!!!!!!!!!!!!!!!!!!!!!