Catabola, Angola
WAT (West Africa Time)
Offset: WAT is 1 hour ahead Greenwich Mean Time (GMT) and is used in Africa
Countries: It is used in following countries: Angola, Benin, Congo (Dem. Rep.), Central African Rep., Congo (Rep.), Cameroon, Gabon, Equatorial Guinea, Niger, Nigeria, Sao Tome & Principe, Chad
Principal Cities: The largest city in the WAT timezone is Lagos from Nigeria with population about 9 million people. Other major cities in the area are Kinshasa, Kano, Ibadan, Luanda
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

Catabola, Angola representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for WAT
- A - short form of 'Alpha'
- Africa/Bangui
- Africa/Brazzaville
- Africa/Douala
- Africa/Kinshasa
- Africa/Lagos
- Africa/Libreville
- Africa/Luanda
- Africa/Malabo
- Africa/Ndjamena
- Africa/Niamey
- Africa/Porto-Novo
Time zones with the GMT +1 offset:
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
- +01 -