The AD Era to 1900
http://www.angelfire.com/rnb/bashiri/CHRON/Thousand.html


The references of B.C. (before Christ) and A.D. (the year of our Lord) are based upon the Christian dating system. This creates a problem for Jewish people who prefer not to use references to Christ, so they opt for different designations for the same time periods: B.C.E. (i.e., B.C.) and C.E., “common era” (i.e., A.D.).
http://www.ariel.org/qajewcal.html

Recent Jewish research has shed much light on the complex and varied religious and social situation in Palestine during the first century of the Common Era (i.e. the era common to Jews and Christians).
http://www.jcrelations.net/stmnts/lambeth88.htm


The Common Era is common simply because many people, including non-
christians, have agreed to use this dating convention out of convenience.
Since any dating convention must start with some arbitrary point in time,
why not continue to use the one we've been using already for 1400 years
or more. If you choose to identify this era as that of your "Lord", so
be it. Others might choose to identify as the "Common Era", i.e., the
period delineated by this dating convention we all share. It is nothing
more, and that is what makes it less value-laden, despite the arbitrary
point of departure.
http://www.ku.edu/~medieval/melcher/matthias/t22/0119.html

The system, or calendar, we use to work out the number of the year we're in is based on the Common Era (CE). This covers the period from the birth of Christ to the present day. The millennium therefore marks 2000 years since Christ was born.
http://www.learningalive.co.uk/lapages/topical/millennium.ht...