Which time zone is used by both Iceland and the United Kingdom?

Which time zone is used in Dubai? Which city is in the UTC-4 time zone? What time zone is New York City in? What is the time zone of the Azores? What time zone is the state of Queensland, Australia in? What is the time difference between New York and Los Angeles? Which time zone is used in Australia's eastern states during the summer months? What is the name of the time zone used in France?