The F-22 incident occurred at the time I was testing an in-flight AAR mission planning and management computer system. So I devised a plan which crossed both the equator and IDL at midnight GMT in the middle of an AAR refuelling bracket, knowing that the previous contractor's version was certainly date dependent...one of its many failings But the new version was fine and much to the relief of the supplier, no problems were encountered.
Regarding navigation in WW2, one aspect which should be recalled is that magnetic declination values were much greater than today - and there were no INS running on true in Lancasters! Everything was magnetic - with around 11 deg W declination at Waddington and 4 deg W over Berlin! Maintaining an accurate course whilst being harassed by night fighters cannot have been easy!