Amazon RDS for MySQL adds support for Delayed Replication that allows you to set a time period

Amazon Relational Database Service for MySQL adds support for Delayed Replication feature that allows the developers to set a time period where the read replica lags behind the source database. The standard MySQL replication configuration has less replication delay between the replica and source but with the delayed replication, you can precede an intentional delay as part of the strategy for disaster recovery. Delay is helpful in the disaster recovery plan where there is a human error.  You can configure the read replica from the delayed replication through a stored procedure and it can be performed when the replica is created or specified for the existing replica.