Depending on what you want to shoot, different times of the day will give your photo a different mood, for example if you'd like to shoot the colours of the sky, you have to make sure that the sky is blue and clear that day, then at around five (depending on where you live), or one hour before the sun sets, head out the the closest beach that will give you a nice view of the sunset, if you're early and have some time to spare, take photos of other things like sand, flowers, shells...etc, but make sure you have enough time to set up your tripod. When the sun goes down, you can start snapping, once it is set and you can no longer see the sun, do not leave yet! A few minutes later the sky might give you some magical clowers as a reward for your patience!
Jeremy