Clock time and Meter reading

Clock time noun - A reading of a point in time as given by a clock.

Meter reading and clock time are semantically related. In some cases you can use "Meter reading" instead a noun phrase "Clock time".

Meter reading noun - A datum about some physical state that is presented to a user by a meter or similar instrument.

Clock time and meter reading are semantically related. Sometimes you can replace phrase "Clock time" with "Meter reading", this phrases are similar.