I am sure that this can be achieved but I keep ending up with a syntax error.

I have a contract end date which is manually entered or imported from a web form.

I would like a formula field which simply calculates the contract end date minus 130 days.

If it can be displayed as a date rather than a date/time even better.

I already have a process that alerts the client via email but have the review date in an email on other followup correspondence will look very professional.