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Time difference between Johannesburg, South Africa and Dubai, UAE is: +2:0 hours. Dubai is 2:0 hours ahead of Johannesburg. That means when it is 9:00 am in Johannesburg, it is 11:00 am in Dubai.
The time difference between Florida and Mexico is 1 hour. Mexico is  1 hour behind Florida, so when it is 9 pm in Florida it is 8 pm in  Mexico.