I'm not sure what you mean by:You put me on the right path. Thank you I made some modifications and it works
30 days or less from today()
I'm not sure what you mean by:
But, if that formula does what you want it can written like this:
=Sheet2!$A2&" "&Sheet2!$C2&" "&Sheet2!D2&IF(DAYS360(TODAY(),Sheet2!J2)<30," Calibration Due","")