What’s the time by your watch?
huge bell inside a high Clock Tower announces the time everyday. It has
been doing so since 1859. The Clock Tower is a part of the Houses of
Parliament. River Thames flows nearby. I am sure, by now you have guessed
that we are talking about Big Ben, the famous clock situated in London.
Since 1924, the British radio -BBC has been broadcasting the
chimes of Big Ben to people all over England. It is the most reliable clock in the
world. It always shows the accurate time. The time differs by one and a
half second to that of Greenwich Meridian Time or GMT. It is the authority that sets the correct international time.
GMT also stands for the Greenwich Mean Time.Here Mean is the average time the earth takes to complete one rotation from
noon to noon that is 24 hours. It is calculated at the Royal Observatory situated in
Greenwich, England. To make things easier, the world has been divided into
time zones, each of around 15 degrees of longitude wide. The
central zone is at 0 degree longitude. It is the Prime Meridian –the
location of GMT.It Marks the starting point of all other time zones. The
standard time in each zone differs from the zones of either side by one
hour. If you travel to another country, you usually have to alter your
watch. The further you go, east or west, the bigger the time change. For
example the Indian Standard Time -IST is five hours 30 minutes ahead of
GMT. The Clock Tower at Allahabad in Uttar Pradesh, announces IST. Thus the local
time of Allahabad is also the IST and is followed all over India. The city
is situated at 82.50 E longitude-the exact center of India. So
next time if you go abroad, remember to set your watch according to GMT.