Clan Life
Time
The year is split into four seasons, New-leaf(spring), Greenleaf(summer), Leaffall(autumn), and Leafbare(winter). Each season lasts roughly three moons (one moon is about one month). For us, each moon is roughly 10 real-time days, giving us 3 full years in the warriors world in each real-time year.
Kits will typically spend the first six moons with their mothers in the nursery until they are appointed as apprentices to a warrior mentor. The time for an apprentice to become a warrior all depends on the apprentice's ability to learn the warrior code and prove themselves a capable hunter and fighter.
New-leaf is the best time for kits to be born. The prey that is scarce during leafbare is once again plentiful, and it is easy to provide food for the queens that look after them. Newleaf can be a danger, though, as the thawing frost can easily cause floods.
Greenleaf is a prosperous time for all, but may also bring early floods or drought as starclan sees necessary.
Leaffall is a hunters friend, the golds and reds of the fallen leaves making for the best camouflage, and it is the last chance before the snow comes to get fat on fresh-kill.
Leafbare is the hardest time for every clan. Prey becomes scarce, hiding well beneath the snow. The waters freeze and the fish are lost until new-leaf.
Names
The long version can be found here on the Warriors Wikia.