An hour before a deadline. Pathetic, but true.
In March I ended up rewriting half of my essay in the library (needed to go there to print my physical copy) an hour or so before the deadline. After proof reading it, and looking back on the article I had to analyse, I noticed a fault in the article itself and felt impelled to point it out in my essay (essentially, the author misused sources- not by accident but with a purpose, which in History that is heresy). To confirm my claim I even brought a contemporary source (written in Latin) that I partially translated, but got the meaning anyway and I conveyed it in my essay, in a witty paragraph written in 5 minutes. Printed the new essay, with updated referencing an biography in that time. I was impressed and also ashamed.
Spent two weeks of writing and reading for that essay like a retard, and I got the spark of nous right then.
Thanks, Hume.
Aside from that example, in between lectures. I have hours between lectures in some days, and I live pretty far off campus. To save time, therefore, I pack myself a hearty lunch and stay in the library or in other study areas until the next lecture. Either that, or in an ancient forest that's a 5 minute walk away from my library. Only when the weather is merciful, though.