Here is how to set up these values for everyone west of the Greenwich Meridian.

To find out your correct latitude and longitude log on to www.multimap.com and enter your post code and you will be given your location as a decimal.

For example a location that has the latitude of 52.53 and a longitude of -2.26.

Enter the settings mode on the WS250 / WS300 and set the correct time and date. The console does not use decimal points for latitude or longitude so it will be 525 for the latitude. However for longitude you need to subtract the value from 360. In this case you get 357.74 which would enter as 3577. Finally set the time zone as 0 for wintertime and 1 for summertime.