We have switched approximately 40 station years of Greek data from Metric to RLR. While investigating the datums at five stations, we had designated the data to be Metric. The Hellenic Navy, the authority responsible for the Greek tide gauges, recently supplied additional datum information, allowing us to calculate the RLR factors. The five stations include Iraklion, Kalamai, Posidhonia, Preveza, and Siros. We would like to thank the Hellenic Navy for their assistance.