BC, AD, BCE, CE, AH, etc 
There has been lots of debate on what date format to use, and Wikipedia has been unable to agree on a standard. Because of this, new articles can use whatever date format is appropriate, but they ask that no one go through and change a bunch of articles. 

About Arabic -> English translators, I've wanted one of those for a long time. Apparently there isn't a good one on the Internet, sadly. –  (talk) 12:37, September 7, 2005 (UTC)