A.T. Robertson Commentary John 21:14

"This is now the third time that Jesus was manifested to the disciples, after that he was risen from the dead." — John 21:14 (ASV)

Now the third time (το ηδη τριτον). "To the disciples" (apostles) John says, the two others being told by him (20:19,26) on the two Sunday evenings. There were four other appearances already (to Mary Magdalene, to the group of women, to the two on the way to Emmaus, to Peter).