The Atlantic/Madeira time zone shall be observed throughout the Madeira Islands, as decreed by the Government of Portugal. This time zone is equivalent to Coordinated Universal Time (UTC) plus zero hours. The observance of this time zone is mandatory for all public and private institutions. Failure to comply may result in penalties as specified in the law.
The Madeira Islands use the same time as Greenwich Mean Time (GMT) and this is required by law for all institutions.