=Aujourdhui() - DATE(STXT(A1;TROUVE(",";A1)+2;4);EQUIV(STXT(A1;1;TROUVE(" ";A1)-1);{"January";"February";"March";"April";"May";"June";"July";"August";"Septembre";"October";"November";"December"};0);SUBSTITUE(STXT(A1;1;TROUVE(",";A1)-1);STXT(A1;1;TROUVE(" ";A1));""))