Presentation is loading. Please wait.

Presentation is loading. Please wait.

 All time is measured from Greenwich a suburb of London in England.  The zero degree longitude line or the Prime Meridian passes through Greenwich.

Similar presentations


Presentation on theme: " All time is measured from Greenwich a suburb of London in England.  The zero degree longitude line or the Prime Meridian passes through Greenwich."— Presentation transcript:

1

2  All time is measured from Greenwich a suburb of London in England.  The zero degree longitude line or the Prime Meridian passes through Greenwich.  Greenwich Mean Time (GMT) is the time it is in Greenwich.  Greenwich was chosen as a lot of the world’s sea charts were being drawn up in England at that time.

3

4  24 hours to make a complete rotation of 360 degrees  360/24=15  Every 15 degrees is approx 1 hour

5  The earth is divided into time zones.  Each time zone has a difference in time of approx 1 hour from Greenwich.  Time zones tend to avoid land masses if possible.

6

7  The line is at 180 degrees Longitude.  Time is on the same on each side of the line, only it is a different day.

8  The earth travels west to east, hence the west is behind the east.  Add 1 hour for each time zone east of Greenwich and subtract 1 hour for each zone west of Greenwich.

9 Moscow+3 = 17.00Paris+1=15.00 Tokyo+9 = 23.00Brisbane+10=00.00 Paris-5= 9.00Delhi+5.30=19.30


Download ppt " All time is measured from Greenwich a suburb of London in England.  The zero degree longitude line or the Prime Meridian passes through Greenwich."

Similar presentations


Ads by Google