If you have seen "ca" in connection with a date, it is the abbreviation for "circa" which is from the Latin for "near to." This pretty much means, "approximately." So if you say that the Vikings started raiding ca 988, you'd be saying "around 988."
The other abbreviations I think you are confusing ca with are "CE" and "BCE". These mean "Common Era" and "Before the Common Era" and are the same as B.C.--before Christ and A.D. which stands for "Anno Domini", Latin for "Year of the Lord." When Christianity became politically incorrect in scholarly circles, the BCE and CE were adopted to avoid dating things only in terms of before and after the birth of Jesus.
In summary: ca means "around that time"
CE or AD mean after the year zero--it is now 2011 CE or 2011 AD.
BCE or BC mean before the year zero as dated from the birth of Christ.
Interesting tidbit--it is thought that the dating for the birth of Christ was miscalculated when the calendar was established, off by four years. So you have the interesting fact of Jesus Christ's birth taking place in a year dated 4 BC--four years "Before Christ!" Nice trick!
You mean CE and that means common era. It is used in place of AD.
Jesus
ca 1550 BCE means 'circa 1550 Before Common Era.' Circa means 'around' and Before Common Era is another way to say 'Before Christ (BC)'
25BC means that this time was 25 years before the common era (CA) or before christ (BC). 200AD means 200 years after the common era (CA) or after christ Add the two together: 25 + 200= 225 years.
According to the California Department of Finance the 2008 population of CA is 38 million, members of the Church of Jesus Christ of Latter-Day Saints make up 2% of the population so around 760,000.
Yes.
As King David's great great grandmother, Ruth was very very 'BC', living over a thousand years before Jesus' birth. In his Study Bible John MacArthur dates it in the time of the Judges ca. 1370 to 1041BC.
Birth ca. 525 B.C. Death ca. 456 B.C.
ca. 1512.
No
Yes, Jesus Garcia from Oakland Ca. who goes to Oakland Unity High School is very gay and he is very super proud of it.
Compton, CA
Traveling from CA, you reach Utah before reaching CO.