Shanglun Wang has a tutorial on building a full application using F#:
In the United States, there is a popular saying: “It’s five o’clock somewhere”.
In some parts of the world, 5:00 pm is the earliest time when it is socially acceptable to have a drink, or a traditional cup of tea.
Today, we will build an application based on this concept. We will build an application that, at any given time, searches through the various time zones, find out where it is five o’clock, and provide that information to the user.
It’s a neat app.