Who was in the upper room on the day of Pentecost?
Also question is, did Pentecost happen in the Upper Room?
In Christian tradition, the room was not only the site of the Last Supper (i.e. the Cenacle), but the room in which the Holy Spirit alighted upon the eleven apostles after Pentecost. It is sometimes thought to be the place where the apostles stayed in Jerusalem.
Additionally, where were the apostles on the day of Pentecost? Luke 24:53 says that the disciples stayed continually at the Temple praising God. The Feast of Pentecost, or Shavuot in Hebrew, was just starting in Jerusalem as the book of Acts begins. It was one of the three great pilgrim feasts that every Jewish male was required to attend (see Deuteronomy 16:16).
Correspondingly, who was present at the day of Pentecost?
About one hundred and twenty followers of Christ (Acts 1:15) were present, including the Twelve Apostles (Matthias was Judas' replacement) (Acts 1:13, 26), Jesus' mother Mary, other female disciples and his brothers (Acts 1:14).
How long did the disciples pray in the upper room?