Is the tribulation 7 years? 2

Is the tribulation period really 7 years? (Dan 9 v 27, 1 Thess 5 v 3, Rev 11 v 2 & 3, Rev 12 v 6, Rev 13 v 5, Dan 7 v 25, Rev 12 v 14, Dan 12 v 7, Matt 24 v 15 & 16, v 21 and 29 ) 091423