You may also look at the events in previous and future months by using the pulldown menu in the upper left corner of the calendar program. Simply select the month you want to view. You may also select different years, by using the "<<" button t o go back and the ">>" button to go forward. The "Now" button will bring the calendar back to the current month and year.
*Sorry, but at this time, this applet required the use of Java. If your machine will not run (or you are uncomfortable with) Java, you can use The Smithsonian Institute / USGS Global Volcanism Program Search by date feature.