When there are new updates available for your installation of Windows 7 or 8, it prompts you with a Window asking you to either restart the computer or to postpone the installation for 10 minutes, one hour or four hours. Either option may not be the best sometimes, so why not postpone it by a full day in the first place? To achieve that, open the Local Group Policy Editor by searching for group policy in Windows' main menu.
In the left pane, navigate to Local Computer Policy > Computer Configuration > Administrative Templates > Windows Components > Windows Update. Click it once and select Re-prompt for restart with scheduled installations. Double-click it and check the Enabled checkbox. Now a counterbox becomes available on which you can specify a number of minutes, enter 1440 for a whole day, then apply the changes.