Shift Work

Looking into working a schedule where I would be working 14 days on, 14 days off. Days and nights rotate every quarter - so for three months I would work two weeks straight from 6pm-6am, then return home for my two weeks off where I would swap back to a normal day routine. This would continue for three months, then the next three months I would work the opposite (daytime) shift.

How badly would this jack up my circadian rhythm?