If you want to see events that happened on a previous date than today, surf to www.gokunming.com/en/calendar/ with a browser that will run JavaScript from the address bar, such as Google Chrome. When you're there, replace the contents of the address bar with

JavaScript:calendarLoadDate('2011-09-21')

in which you can change 2011-09-21 to any date you wish in the yyyy-mm-dd format.

Alternatively, you can surf (in any browser) to

www.gokunming.com/en/calendar/items/2011-09-21

in which you can again change the date to the one of your desire. With this method, however, you will lose the style sheet, meaning the familiar GoKunming look will be gone.

You never know when it may come in handy.