It is nice but you would like to have the possibility to choose your own towns. Often for example I want to know what time it is in Seattle compared to the time

It is nice but you would like to have the possibility to choose your own towns. Often for example I want to know what time it is in Seattle compared to the time in Frankfurt where I live. If it can be customized, it will be a great tool. For the moment I prefer www.time.is which takes a different approach but what I want.