Here are some different styles of time line.  Some are more complicated than others.  I suppose the 'dates' are important to remember  ... but the idea of a time line is really to show the order in which events happened in history.

If you wish to see a 'real' time-line look at the HyperHistory  website. Click on one of the 'dates' to get started when you get there.	Or you could try a History of Flight time-line from the Science Museum in London.
Even Star Wars has its own time-line. It's a bit difficult to follow.	You can  make a time line about the life a person. This is a very brave girl called Ann Frank.
Perhaps you could find a time line about YOUR country. This one is all about Canada.	This time line is about the geological history of the whole earth.
You can have a time line all about explorers.	This time line shows the history of toys and games.