I usually space my meals closer together early in the day, when I tend to be hungrier. After my lean and green dinner, I'm usually less hungry, so I space those last couple of meals out a bit more.
But I still get hungry sometimes, too. Usually not starving, and usually it just hits 15 or 20 minutes before mealtime, but it's still hunger. And every once in a while (like Tuesday, actually), I'm hungry all day. I had a pickle, some Jell-O, everything I could think of. Finally just decided to be hungry for a day.