I mean, seriously I have a 1 hour ban and a 5 minute ban, but they will count as real bans, because they do not show duration.
I will step in here and let you know that they absolutely
do show durations.
I always take into account how long the ban was posted for
and the unban date if the key was unbanned early.
I'll also write a note in the log referring to exactly what happened for the player to receive the ban and, if they're unbanned early, I'll write a note about that too.
To illustrate, here's a ban I posted with the name removed:
Ban Date 05.10.2013 22:24:21
Scheduled Unban 07.10.2013 22:23:00
Unban Date 06.10.2013 16:13:16
Message Was cooperative via messages on forums. Shortened ban as a result.
Of course, I don't want to be presumptuous, but most admins will take into account a number of factors when determining a warning, ban, ban length, etc.
The duration of previous bans is one additional thing we take into account.