Community calendar

I live in an American heavy expat community. There are many expat owns businesses in the area that offer goods and services catering to expats but there is not single portal for these businesses to let people know their daily specials, local events, ect. I would like to create a very simple website where anyone can post one or more events on a virtual calendar so the community as a whole has a resource to check for local events. I would like the landing homepage to be the specific date the site is accessed and the events for that day show in a simple list of links that the user can then select to get more information. It would be nice if there was the option for other local communities to add their towns as well. Although the home page shows the specific day, I would like people to be able to look at a week or month or another days events as well.