144,000 Sealing Complete? - Revelation - 6th Trumpet, 2nd Woe (7 Trumpets of Revelation)

Can we determine from Revelation when the Sealing of the 144,000 is complete or finished? Clue is at Revelation 7:3 7:1 “I saw 4 Angels standing at the 4 corners of the earth, holding back the 4 winds of the earth, that no wind might blow on earth or sea or against any tree. 2 Then I saw another angel... & he called with a loud voice to the 4 Angels who had been given power to harm earth and sea, 3 saying, “Do not harm the earth or the sea or the trees, UNTIL WE HAVE SEALED THE SERVANTS 0F OUR GOD