Just bought a hydromax 16969. Want to know what the GMT hand is for?

Wondering how to find latitude and longitude coordinates? Welcome to WhatsMyGPS.com, an easy way to find the latitude and longitude location of any place on Earth! It's a great way to share your address, favourite locations, travel destinations, or Geocaching coordinates. You can also use WhatsMyGPS.com to get GPS location coordinates for your handheld or mobile GPS receiver. For Geography lovers, for hikers, for trivia, or just for fun, it's "Where in the World?" Greenwich Mean Time or Meridian Time has been a time standard since 1884. It was chosen because the Prime Meridian (the line of 0° Longitude) runs through Greenwich. Greenwich was a royal park and palace on a hill to the south of the River Thames east of London. In 1675 the great race to create accurate maps for navigators had begun and Charles II offered the land to The Royal Society for Britain's first national observatory. Christopher Wren was commissioned to designed the domed building and John Flamsteed was appointed Astronomer Royal. British mapmakers began to set Longitude from Greenwich and in 1884 it was adopted as the international meridian or starting point. Every 15° longitude represents one hour's difference in time: (24 x 15 = 360, the degrees of a circle). You can work out the time at every location on earth if you know how many degrees it is east or west of Greenwich. - See more at: http://wwp.greenwichmeantime.com/what-is-gmt#sthash.BXqZe5oG.dpuf