You should learn that you have to solve the clock to 12 o clock when learning how to solve clock and not 5 minutes before your comp. I thought that you just had to solve the clock to either 3, 6, 9, or 12 o clock and didn't realize that there was an indicator for 12 o clock. I thought that when people said "solve it to 12 o clock" they meant to solve it to the top to make it easier to learn.