Hello Ian!
Is there a time frame we're supposed to work in? Is it 31 days or do we just need to submit within the specified time window?
Hello ignotus17! You more or less just need to submit within the specified time window. As long as you can get it in before the deadline, you can take as much (or as little) time as your need (that means you can even start right now). Besides that, as long as your entry follows the guidelines in this post you should be good to go!