Question

.....is the reference point from which historians count dates

Answer 1

the birth date of Jesus Christ is the reference point from which historians count dates.

Answer 2

The birth of Jesus Christ is the reference point from which historians count dates.

Explanation:

• Jesus Christ's birth is the reference point from where historians count dates. The dates of years prior to Christ's birth are counted backwards and are referred  to as Before Christ (BC) of BCE (Before Common Era)
• The years after Christ is referred to as Anno Domini (AD) which implied the "Year before Lord" or Common Era (CE). These years are typically counted forward for example, 45CE comes before 50CE
• To arrange any historical event(s) in the chronological order historians consider the Common Era timeline