opportune

1. ADJ If something happens at an opportune time or is opportune, it happens at the time that is most convenient for someone or most likely to lead to success. 适当的; 适时的[正式]

I believe that I have arrived at a very opportune moment. 我想我到得正是时候。

The timing of the meetings was opportune. 会议的时间安排得恰到好处。