The 27th leap second will be officially applied December 31, 2016 at 23:59:60 UTC. For Oracle DB instances on RDS the following applies:
- RDS will spread out the leap second equally in the 24h surrounding the timestamp above.
- After this period RDS time will be in sync with Cordinated Universal Time.
- This applies for Oracle DB instances with versions 188.8.131.52, 184.108.40.206, and 220.127.116.11. They will follow AWS Adjusted Time that is applied to RDS.