There is
Old Republic era (25,053 – 1,000 BBY)
Rise of the Empire era (1,000 – 0 BBY)
Rebellion era (0 – 5 ABY)
New Republic era (5 – 25 ABY)
New Jedi Order era (25 – 40 ABY)
Legacy era (40 ABY—)
Ok the Yuuzhan Vong war isnt part of the era list but it is a major event that happened in most of the New Jedi Order era that started at 25 ABY(but started secratly somewhere in the Old Republic era).If you dont know ABY and BBY they are measurements of time in Star Wars that means time from Before the Battle of Yavin and After the Battle of Yavin.And yes I'm a Star Wars nerd(Yes i'm not afraid to admit it)