悪日 (あくにち, akunichi) Japanese meaning: unlucky day | KotomoraToday is an unlucky day, so it's better not to do anything important.
Usage patterns
〈日〉は悪日だfor a day to be an unlucky day
Today is an unlucky day, so it's better to avoid making important decisions.
悪日を避けるto avoid an unlucky day (when scheduling something)
We chose the moving date avoiding any unlucky days.
悪日に当たるto fall on an unlucky day
That day fell on an unlucky day, so we postponed the wedding.
