well it is usually in moons in warrior cat ages. 7 moons is 7 months, but 6 moons to 12 moons are age of an apprentice. 12 moons to 20 moons could be a young warrior and Above 2 years ( 24 moons + more) could be an tecnically a adult warrior or in a case queen. 7 years old could be some where above 80+ moons.