Page 257 - DK Children's Encyclopedia

Time zones SEE ALSO

▸ ▸ Aircraft p.13
▸ ▸ Clocks p.61
Clocks do not show the same time all over the world. ▸ ▸ Day and night
If they did, it would be dark at noon and light at midnight p.77
in some places. To avoid this, the world is divided into ▸ ▸ Maps p.155

24 areas called time zones. There is a difference of one ▸ ▸ Sun p.247
hour between time zones that are next to each other. ▸ ▸ World p.275

Times around the world
Time zones are based on the time in Greenwich, London 12 noon Paris 1 p.m. Berlin 1 p.m. Beijing 8 p.m.
in London, which is known as Greenwich Mean
Time. The time in the zones to the west
of Greenwich are earlier, and the times in the
zones to the east are later.

New York 7 a.m.

Moscow 3 p.m.

Los Angeles 4 a.m. Marrakesh 12 noon Sydney 10 p.m.

Russia is such a
big country
that it stretches Cairo 2 p.m.
across 11 time
zones. Cape Town 2 p.m.

Sundials Rio de Janeiro 9 a.m.
Before time zones were invented, The pointer’s
people worked out the local time shadow shows Jet lag
from the position of the sun in the time. Traveling quickly across several
the sky using a sundial. time zones can confuse our bodies,
The shadow cast by which still think they are in the
a pointer on the original time zone. This state,
dial showed called jet lag, can cause tiredness,
the time. headaches, and problems sleeping.

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