Time in Guinea

Time in Guinea is given by a single time zone, denoted as Greenwich Mean Time (GMT; UTC±00:00). Guinea shares this time zone with several other countries, including fourteen in western Africa. Guinea does not observe daylight saving time (DST).

History
French Guinea—the French colonial possession that preceded Guinea—first adopted UTC−01:00 on 1 January 1912.

IANA time zone database
In the IANA time zone database, Guinea is given one zone in the file zone.tab – Africa/Conakry, which is an alias to Africa/Abidjan. "GN" refers to the country's ISO 3166-1 alpha-2 country code. Data for Guinea directly from zone.tab of the IANA time zone database; columns marked with * are the columns from zone.tab itself: