Sorry for the gap - marking nearly killed me but I made it out the other side. I haven't got long but I thought I'd share what I learnt in my German class today: Germans eat lunch at midday, no matter what time they eat lunch.
Well, the German for 'to have lunch' is zu Mittag essen, or 'eat at midday'. I asked whether you would still say this even if you have lunch later (which I usually do), and the answer was 'well, midday is usually lunchtime' but that yes, you would say it anyway. So in my homework I have written Um 1 Uhr esse ich zu Mittag, which literally means 'at one o'clock I eat at midday'.