Time in Africa
Africa, the world's second-largest and second-most populous continent, spans across six different time zone offsets from Coordinated Universal Time (UTC): UTC−01:00 to UTC+04:00. As Africa straddles the equator and tropics, there is little change in daylight hours throughout the year and as such daylight saving time is currently observed in only two countries, Morocco and Egypt. However, it was previously observed in several other countries. Before the wide adoption of standard time zones, local mean time was widely used in railway time for train timetables and telegraphic time for telegraphy. Local mean time is a solar time that corrects the variations of local apparent time by forming a uniform time scale at a specific longitude; for instance, Liberia observed UTC−0:44:30 instead of an approximate offset such as UTC−01:00.