古往今来[kooukonrai] in all ages
古今[kokon] ancient and modern times
古今東西[kokontouzai] all times and places
古今無類[kokonmurui] best ever

今か今か[imakaimaka] eagerly waiting
今が今[imagaima] just now
今が今まで[imagaimamade] till just now
今しがた[imashigata] moment ago

今宵[koyoi] this evening
春宵[shunshou] spring evening
宵の口[yoinokuchi] nightfall
宵越し[yoigoshi] (kept) overnight
徹宵[tesshou] all night

半宵[hanshou] midnight
宵宮[yomiya] eve of a festival vigil
宵っ張り[yoippari] night owl
宵積み[yoizumi] goods loaded in the afternoon for delivery the following morning