My Google Calendar can be viewed here: 
You can also add it to your own as a shared calendar. Sign into your Google Calendar, and type my GMail address into the “Other Calendars” spot on the left menu.
Disclaimer: I don’t really have any expectation that I’ll keep this up to date, if every other calendar/date book/etc that I’ve ever tried to keep is any indication. But I will try to, at least, put the weekends that I’ll be away online.