Round Change
From Universe Wars
UWars rounds are around 2-3 months long. There are usually 3-4 rounds a year.
Once a round ends you will be able to join the next round once you login by clicking the Join link under the new round that is shown. Once you join your empire will be in the very beginning just like it was when you first joined. Usually Ticks do not start right away, but you can see the exact time they will start under the new round once you login.