] It includes the leap seconds added until the GPS clock ] was set in 1980, but has ignored those added since. This ] means GPS time is now running 13 seconds ahead of ] coordinated universal time - which includes all added ] leap seconds and to which most clocks on Earth are set - ] but is some 19 seconds behind international atomic time, ] which is based on atomic clocks and ignores leap seconds. who knew it was so complicated? What time is it? Well, no one knows for sure |