they both mean time but there are little difference between them 现在几点了？=现在几点钟？what is time? what time shall we meet?我们该几点钟碰头呢？ Glancing at the watch, she told him the time她看了一下表，告诉他几点钟了

they are the same meaning ! and i am the native of nanjing ,china. you should trust me !

there is nothing different between '几点了' and “几点钟”。