Midnight... When it's time to leave your Mac for a while, you want a nice quick way of putting it to sleep and a little bit of flexibility in how you do it.
Midnight can either put your Mac into its standard sleep mode or into hibernation mode (also referred to as 'safe sleep' or 'deep sleep').
In addition to choosing a particular sleep mode you can choose whether your Mac should switch to the log-in screen before going to sleep.
If your Mac doesn't support safe sleep you can still use Midnight but the hibernation option will be disabled.
Midnight is a clever little fella and can handle all this for you more...