At this stage or point in time (often implying it’s late or too late); only now.
今になって謝られても遅いよ。
Even if you apologize now, it's too late.
今になってその資料が必要だと言われても手遅れだ。
It’s too late to be told now that those materials are needed.
今になって思えば、あのときの判断は正しかったと思う。
Looking back now, I think that decision was correct.