In NLP Through Time people will store their memories left to right or right to left or in any other way so that all time is in front of them.
To be traditionally Through Time, all of your time line will be in front of your eyes.
Through Time people will like lists, they will be on time always (and get angry if you are not), will love to use their organisers and will want to complete things…now!
There is a cross over with In Time people (so this is a generalisation to give you a sense of the difference).