What day was today? If you want to know what the ancient Romans would be celebrating today, go to the Ancient History Events Calendar at http://www.clubs.psu.edu/aegsa/rome/romec.html, where you can find which Roman holiday (and there were eventually about 244 per year!) corresponds to which modern date.

Other people are celebrating too:

Hebrew Calendar -- http://expet.gps.caltech.edu/~asimow/calform.html

Islamic Calendar -- http://www.cs.pitt.edu/~tawfig/convert/

Chinese Calendar -- http://ghs1.greenheart.com/billh/chinese.html

Vatican (Catholic) Calendar -- http://www.cwo.com/~pentrack/catholic/romcal.html

Aztec Calendar -- http://ghs1.greenheart.com/billh/aztec.html

Ancient Egyptian Calendar -- http://ghs1.greenheart.com/billh/sirius.html

Tibetan, Vietnamese, Baha'i, Native American, Bengali, Maya, Multilingual, French Revolutionary, Persian (Jalaali), Japanese Lunar, Nahuatl, Celtic, Greco-Roman Festival, Jain (with other subcontinent), Zoroastrian, Indonesian, and Pagan calendars -- http://www.calendarzone.com/Cultural/