Time in Gibraltar
Prior to 1982
Until 1982, Gibraltar used GMT+1 all year round. This put it in neighbouring Spain's time zone for 5 months and in the UK's zone for the 7 months of British Summer Time. In 1982, Gibraltar changed to use Central European Time all year round, putting it wholly in tune with Spain.
IANA time zone database
This refers to the area having the ISO 3166-1 alpha-2 country code "GI".