Restatement Second of Contracts § 234
Order of Performances
- Where all or part of the performances to be exchanged under an exchange of promises can be rendered simultaneously, they are to that extent due simultaneously, unless the language or the circumstances indicate the contrary.
- Except to the extent stated in Subsection (1), where the performance of only one party under such an exchange requires a period of time, his performance is due at an earlier time than that of the other party, unless the language or the circumstances indicate the contrary.
Copyright, The American Law Institute