Amazon launched AWS Instance Scheduler
AWS Instance Scheduler enables you to take control over operational costs for development and production environments. Basically enables you to start and stop Amazon EC2 and Amazon RDS instance according to an schedule but you can have multiple start-stop schedules for a single instance. It has a lot of features and empowers you to manage your servers in an more automated way.
You can read about all features at : https://aws.amazon.com/answers/infrastructure-management/instance-scheduler/