来らい日じつMeanings1nounfuture day; later dateRefers to a day or date that is yet to come; somewhat formal or written style.来らい日じつの予よ定ていはまだ決きまっていません。The schedule for a future day has not been decided yet.詳しょう細さいは来らい日じつお知しらせいたします。We will inform you of the details at a later date.