Greenwich is at 0 Longitude
Dublin, Ireland is at 6 degrees 15 minutes 35 seconds West longitude.
There for Dublin is 6 degrees 15 minutes 35 seconds west of Greenwich
4 degrees west of Greenwich, England is the Prime Meridian, the line of 0 degrees longitude.
Dublin is at (Greenwich Mean Time) GMT. Cairns is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Dublin is 10 hours behind Cairns. (Daylight savings not taken into account.)
Greenwich 0 degrees is called the Prime Meridian. It is the line of 0 degrees longitude from which all other longitudes are measured.
zero degrees, the Prime Meridian
If it is 12 noon at Greenwich (0 degrees longitude), then every 15 degrees of longitude corresponds to a one-hour time difference. Therefore, if you are 30 degrees east of Greenwich, the time would be 2:00 PM.
Dublin in Ireland is on Greenwich Mean Time.
Westport is about 9 degrees 15 minutes west of Greenwich.
Dublin is at (Greenwich Mean Time) GMT. Singapore is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. If it is 13:00 in Dublin, it is 21:00 in Singapore.
360 degrees. From Greenwich (London) 180 degrees west and 180 degrees east.
Mayo is about 9 degrees west of Greenwich.
4 degrees west of Greenwich, England is the Prime Meridian, the line of 0 degrees longitude.
0 degrees = Greenwich, UK.
Dublin is at (Greenwich Mean Time) GMT. Cairns is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Dublin is 10 hours behind Cairns. (Daylight savings not taken into account.)
Greenwich is a place in England. If you look at a map, places to the left are west of Greenwich and places to the right are east. A meridian is any line which runs from north pole to south pole and the meridian that runs through Greenwich is called the Greenwich Meridian and by definition is zero degrees. All other meridians are measured in degrees from zero. E.g. New York is -74 degrees, meaning it's west of Greenwich by 74 degrees.
Greenwich 0 degrees is called the Prime Meridian. It is the line of 0 degrees longitude from which all other longitudes are measured.
greenwich
zero degrees longitude