How long time max between last meal and sleep?

I read a lot that eating dinner too late (too close to bedtime) isn't healthy, but there is very little information on whether it is healthy that you eat last meal for example at 3pm (you ate 3 times - at 6 am, at 11 am and at 3 pm) and then you don't eat anything till 6 am next day.. Is it healthy or not? Why?