When it is twelve o'clock noon

When it is twelve o'clock noon, in Greenwich mean time, the hour (local time) is as follows at:

Hours.

Min.

Amsterdam..................................................

12

20

P.M.

Auckland, New Zealand.............................

11

39

P.M.

Berlin.........................................................

1

53

P.M.

Bombay....................................................

4

51

P.M.

Calcutta....................................................

5

53

P.M.

Capetown.................................................

1

14

P.M.

Constantinople.............................................

1

56

P.M.

Dublin.........................................................

11

35

A.M.

Edinburgh.................................................

11

47

A.M.

Lisbon.......................................................

11

24

A.M.

Madrid......................................................

11

45

A.M.

Melbourne.................................................

9

40

P.M.

Naples.......................................................

12

57

P.M.

New York.................................................

7

4

A.M.

Paris..........................................................

12

9

P.M.

Peking.......................................................

7

46

P.M.

Quebec.......................................................

7

15

A.M.

Rome..........................................................

12

50

PM.

St Petersburg...............................................

2

1

P.M.

San Francisco.............................................

4

23

A.M.

Sydney........................................................

10

5

P.M.

Trieste.........................................................

12

55

P.M.

Venice.........................................................

12

50

P.M.

Vienna.........................................................

1

6

P.M.

The difference is at the rate of 4 minutes for one degree of longitude, or one hour for 15°. Time is earlier or later than Greenwich according as the locality is east or west of Greenwich. Places lying close together, but on different sides of the longitude line of 180°, differ nominally by a whole day in time.

Following the example of the United States, all countries are gradually adopting Standard Time. By this is meant time which differs from Greenwich mean time by whole hours. The globe is divided into zones of 15° or one hour breadth, the Greenwich meridian being in the centre of the zero zone. Thus Belgium and Holland keep Greenwich time; Denmark, Sweden, Switzerland, Austria, and Germany (Prussia temporarily excepted) keep the time of Mid-Europe, or of longitude 15° E. - i.e. one hour earlier than Greenwich. In North America again five zones are distinguished. Halifax falls within the time zone of 60° W. long. or four hours later than Greenwich; Montreal and New York fall within the zone of 75° or five hours west of Greenwich; and so on across the entire continent. New York, Chicago, Denver, and San Francisco may be mentioned as places whose times change by one hour as we pass from one to the next succeeding. The corresponding times are distinguished as Eastern (67 - 82°), Central (82 - 97°), Mountain (97 - 112°), and Pacific (112 - 127°) times. Standard time in Japan is nine hours earlier than Greenwich time.