noun, na-adjective, noun which may take the genitive case particle 'no'
timely; opportune
Describes something happening at just the right moment, often with a nuance of being well-timed or seasonable. Used as a noun, na-adjective, or no-adjective.
彼の適時なアドバイスが問題解決につながった。
His timely advice led to solving the problem.
適時の判断が求められる。
A timely decision is required.