A short time ago; the other day. Used to refer to a recent past event.
先だってお知らせした通り、会議は来週に延期になりました。
As I informed you the other day, the meeting has been postponed until next week.
先だっての展示会で新製品を発表した。
We unveiled the new product at the exhibition the other day.
先だって彼に会ったとき、元気そうだったよ。
When I saw him the other day, he seemed fine.