Lunar Birthday (and such)

I had a little discussion with my Mandarin teacher about holidays. She explained that many Chinese festivals depend on the lunar calendar instead of the Gregorian calendar that most of the world uses. For example, today, on the Gregorian calendar, it is October 11, 20o6. Today, on the lunar calendar, it is the 8th month, 20th day (or August 20). We looked up my birthday and found that I was born on the 6th month, 7th day. To look up your birthday on the lunar calendar, you can go here.