Experts want to use atomic clocks

Last updated at 17:47

Britain sets the time for the whole world through Greenwich Mean Time or GMT.

It's all determined by the spinning of the earth and GMT is used to work out the time everywhere in the world.

But the International Telecommunications Union in Geneva, Switzerland, wants to abandon GMT and instead use atomic clocks to calculate time.

They say that GMT is out of date and atomic clocks would be more accurate.

Sonali has been finding out why.