Is it procrastination or just-in-time?

A few days ago, I asked the following question on Twitter: What’s the difference between procrastination and just-in-time? Here are a couple of the responses I got:

@ronhubbard About a day.

@txglennross RT @LisaHaneberg: What’s the difference between procrastination and just-in-time? | I think my brain just exploded. LOL

@sylviataylor – things not getting done and things getting done!

@margaretmotamed Good question! When it’s planned?

@Brainmaker Well, just-in-time could mean “in flow” or superb planning. Procrastination holds neither.