[1][2] Liberia shares this time zone with several other countries, including fourteen in western Africa where it was formerly known as Western Sahara Standard Time (WSST).

[3] Liberia has never observed daylight saving time (DST).

[4] Liberia first adopted the UTC offset -0:43:08 (called Liberia Mean Time; LMT) as it was the geographical central meridian on which the capital Monrovia was located.

[5] In March 1919, the offset was redefined forward by 1 minute and 22 seconds to -0:44:30.

[6][7] Liberia adopted Greenwich Mean Time (GMT; UTC+00:00) on 7 January 1972.