On or about 21 January, 2015 the GPS navigation messages began to include future leap second data which indicates an increase in the leap second to become effective at the end of June, 2015.

You can learn more in the update to the Civil GPS Service Interface Committee.

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.