also: たいあんきちにち
very auspicious day for all occasions
A yojijukugo referring to a day of great luck in the traditional Japanese calendar, suitable for weddings, openings, and other important events. It combines 大安 (one of the rokuyō) and 吉日 (lucky day).
We chose a very auspicious day for the wedding.
We plan to open the new store on a very auspicious day.