Ooops, meant to say, "dot command". See what you did there Imadot?
Thndregg and I have had the closest experience of the kind. Even when timer was set at 10 minutes, it seemed to launch in seconds. I really hope this is an easy fix. I don't know how much it would advance its use, but would be a deggone huge step in making it player friendly.
I thought it was tied to the AH clock...that way any who wanted to join but were otherwise engaged could watch the time and make the mission on time..
to be fair I haven't tried to set a mission in AH3 but was sure it used to put in a launch time associated with the clock (AH)
In order to see the clock, you will have to set in the tower (unless there is a "dot" command to give that information). So, not very useful.
What would be useful, is a 4 ... 3 ... 2 ... 1 minute countdown automatically spammed by the system like the one in mission arena, or at least spammed on mission channel once it has been joined.