Perhaps something like this:

=IF(ISBLANK(D2),IF(ISBLANK(B2),A2-C2&" (Plan-Plan)",B2-C2&"
(Actual-Plan)"),A2-D2&" (Actual-Actual)")

Modify the text as desired
--
Best Regards,

Luke M
*Remember to click "yes" if this post helped you!*


"PAL" wrote:

I am trying to calucate cycle times. I have 2 milestones (each with a
planned and actual date

Column A: Milestone 1 Planned
Column B: Milestone 1 Actual

Column C: Milestone 2 Planned
Column D: Milestone 2 Actual

If the period between the two periods has occured (Actual), then we want to
subtract D from B to determine the cycle time.

If they are blank then the cycle time is planned and the cycle time must be
calculated by

Column C- Column B (if it occured) or
Column C - Column A.

It would be great to distinguish the cycle and whether or not it is planned
or actual in one field. ALternatively, we can have a separate column for
planned (which would be blank if there was an actual) or actual column.