How to use in-sentence of “Mean time”:
+ Greenwich Mean Time began in 1675.
+ Originally South Australia was nine hours ahead of Greenwich Mean Time but in May 1899 they added another thirty minutes to that.
+ Before 1883, local mean time was used in all of North America.
+ In practice, the closely related Mean Time Between Failures is more commonly expressed and used for high quality components or systems.
+ This is a precise sundial which tells not only local apparent time but also local mean time using a scale on it.
