Amsterdam is in Greenwich Mean Time Zone GMT +1. The US Eastern Standard Time (EST) is GMT -5. The US East Coast states are 6 hours behind Amsterdam.
Example:
When it is 9:30 am in US on EST, it would be 3:00 pm in Amsterdam.
55,800 (930 x 60mins)
12 hours
1460
9 hours.
8
This is equivalent to 16 hours.
1 month 210 hours
6 hours and 30 minutes.
6 3/4 hours
9h 15m
There are (7.5 + 24k) hours where k is an integer.
4 hours and 15 minutes.