Hi Donna , 

As God's Two Witnesses lie dead in the street of Jerusalem for 3 1/2 days, they are still witnessing to their enemies who are alive in Jerusalem because they are celebrating their deaths by giving gifts to each other.  Then their enemies witness God's Two Witnesses resurrect and ascend to heaven at  midday on day 1,260.  That makes 1,260 days of witnessing from  beginning to end. 

Blessings to you...