The time difference between CET and EST can be calculated as follows:
CET = UTC + 1
EST = UTC - 5
Therefore, the time difference between CET and EST is:
CET - EST = (UTC + 1) - (UTC - 5)
CET - EST = +6
This means that when it is 9.30 am EST, it is 9.30 am + 6 hours = 3.30 pm CET in Amsterdam.
So, Amsterdam is 6 hours ahead of 9.30 am EST.