24 March 2011 Last updated at 21:04

A brief history of time zones

• Interactive globe
• The science of time
• Time zones: Your experiences

To see the enhanced content on this page, you need to have JavaScript enabled and Adobe Flash installed.

All facts accurate on date of first publication, March 2011. Since then, some countries have proposed time zone changes. Russia due to abolish daylight saving in October 2011, putting Moscow and St Petersburg at GMT+4 all year round.