When Italian mathematician Quirico Filopanti first sounded the idea of time zones in his book Miranda! published in 1858, he proposed that the world be divided longitudinally into 24 equal time zones, where each zone differs from the last by one hour. But the real world is rarely that simple. Influenced by political, geographical and social changes, the world adopted a much more complicated system where time zones differed by three-quarter, half and even quarter of an hour. Today there are as many as 40 different time zones.

With so many different time zones around it’s imperative that some of them would meet at more than one point. There are exactly twenty-two places, according to various sources, where more than three time zones meet. Some of them are obvious, such as tri-point boundaries between nations observing different time zones. The strangest ones are located in Australia because the way the country’s different states follow time.

The time zones of Australia and the three state corners where three time zones meet.