5. Australia
Number of Time Zones: 8
Numbers of time zones on our list of 10 countries that have the most time zones are surely getting bigger. Because of that, we will cover just the time zones where the majority of the population lives. The mainland Australia uses 3 different time zones. The Western part of Australia uses UTC+08:00 without daylight saving time. The Central part of Australia uses UTC+09:30, with south region using the daylight saving time. The Eastern part uses UTC+10:00 and like in the central part, the south region uses daylight saving time.