Graph of timestamps

[figurative]

I have a column of Excel-timestamps in this format:
YYYY-MM-DD hh.mm.ss

Example:

2011-08-03 10.30.22
2011-08-03 10.45.39
2011-08-03 18.13.10
2011-08-04 19.01.01

Each row represents an instance of an event in my experiment. How can I use the data to plot a graph showing the number of events per unit of time passed?
As the time goes by the graph should become wider.

I was surprised I could not find an easy way to plot this, figuring the scenario might be rather common. Thanks for any help!

 

[Hermanito]

You could use a pivottable to group the timestamps per unit of time (day, week, month, etc...) and then use that data to create your chart...

Your next question could very well be: how do I create a pivottable?, but if it is, we'll continue from there

 

[figurative]

Thank you, Hermanito! I will read about Pivots. It's difficult when you don't know where to look. Have a nice day!