Good point

Acts 2...was not the only “outpouring of the Holy Spirit” recorded in Acts. Similar events occurred with each of the geographic people groups Christ included in Acts 1:8. An outpouring occurred in Jerusalem and Judea with Jewish believers. (See Acts 2) It also occurred for the Samaritans and “God fearers.” (See Acts 8:14-17; Acts 10:44-48, Acts 11:13). Finally, it came to the Gentiles, notably under the ministry of the Apostle Paul. (See Acts 19:1-7). 

-- Bud Ahlheim