The 16 hour day
I'm looking up some information about hunger cycles and found that they are now thought to be strongly tied in with sleep cycles. It turns out that both sleep and hunger follow roughly 90 minute cycles. This means that we should change the clock to a 16 hour day instead of 24 hour day.
24x 60 minutes = 1440 minutes a day
1440 minute day divided by 90 = 16 "hour"