Vocabulary What does 十日 (とおか, tooka) mean? 十日 (とおか, tooka) means the 10th day of the month; ten days. Quick factsReadingとおかRomajitookaLevel (estimated, JLPT framework)N5 十日とおかN5 · estimated, JLPT frameworktookathe 10th day of the month; ten daysGenkiGenki 13Example sentences旅行(りょこう)は十日間(とおかかん)でした。The trip was ten days long.十日(とおか)に試験(しけん)があります。There's an exam on the 10th.Kanji in this word十ten; the number 10日day; sun