Measure to filter days between operations

Hi Tommyvhod , 

Try these two measures to get the result in the picture. My table name is Fin.
Let me know if you have any questions.

If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos are nice too.
Nathaniel

Date diff = 
VAR _Time =
     ( Fin[Finish date] ) //captures current date


Var _maxLastTime = CALCULATE(MAX(Fin[Finish date]),FILTER(ALLEXCEPT(Fin,Fin[ID ]),Fin[Finish date]< _Time))

var _datedif =DATEDIFF(_maxLastTime,Fin[Finish date],day)

return
if(_datedif>0,_datedif,0)

==================

Date Dif per ID = CALCULATE(DATEDIFF(MIN(Fin[Finish date]),MAX(Fin[Finish date]),DAY),Filter(ALLEXCEPT(fin,Fin[ID ]),Fin[ID ])