Wall Clocks
Scroll down slowly for more clues and the answer if you are really stuck.
Clue 1
Can you figure out what the time would be in New York using the times shown in the other countries. The time will then open a lock.
Clue 2
The time in London is 8:17 and we know that London is 5 hours ahead of New York?
Answer
The time in New York would be 3:17 = 317