Whenever there is a DEADLINE, take into consideration that it is for YOU, to avoid falling behind, to ORGANIZE your work. You need NOT HAND IN the portfolio on the day of the deadline, you simply have to make sure that you've MET THE DEADLINE!!!
So perhaps, the deadline falls on a Monday, or Sunday... NO PROBLEM, it's just a REMINDER for you to keep your PORTFOLIO UPDATED!!
We will ALWAYS ask you to HAND IN your PORTFOLIO after deadlines!