UTC−01:00 ~ 15 degrees W – all year
Areas in a darker shade use daylight saving time. The base color shows the standard time.
||15 degrees W
|Western border (nautical)
||22.5 degrees W
|Eastern border (nautical)
||7.5 degrees W
|Date-time group (DTG)
UTC−01: Blue (December), Orange (June), Yellow (all year round), Light Blue - Sea areas
Time zones of Africa
Striped colours indicate countries observing daylight saving time. Outside Africa the zones may have other names.
UTC−01:00 is an identifier for a time offset from UTC of −01. This time is used in:
As standard time (all year round) 
As standard time (Northern Hemisphere winter)