Merriman (The Dark is Rising Sequence, by Susan Cooper) for everyfiveyears
YearFic and LinkDate CompletedOther
Canon Time   
1500 AD   
1000 AD   
500 AD   
Anno Domini   
500 BC   
1000 BC   
1500 BC   
2000 BC   
2500 BC   
3000 BC   
ect...