サク 
() yesterday () previous
  
さっこん (n-adv,n-t) nowadays, recently
さくしゅう (n-adv,n-t) autumn of last year, fall of last year
さくしゅん (n-adv,n-t) last spring, the spring of last year
きのう (n-adv,n-t) yesterday
さくじつ (n-adv,n-t) yesterday
さくねん (n-adv,n-t) last year
さくねんど (n-adv) previous year (fiscal, academic, etc.)
さくねんらい (n-adv) since last year
さくばん (n-adv,n-t) last night
さくや (n-adv,n-t) (1) last night
ゆうべ (n-adv,n-t) (1) last night

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字