"two-thirty in the afternoon" is a measure of:

relative time
absolute time

The correct answer is absolute time.

Explanation:

There are two types of times. One is the absolute (true) time. This time flows independently of the observer, so it cannot be altered. It is defined by itself and by its nature.

The other type is relative (apparent) time. This time is a sensitive and external measure of the duration affected by movement. It is usually imprecise, since the movements that affect it are usually variable, accelerated or delayed. An example of this is when we perceive the duration of an event in a fast way and another event in a more lasting way, being that both events take place in the same absolute time (1 hour).

Two-thirty in the afternoon it's a true time because this is independent of the observer.

Have a nice day!