How to validate a string as DateTime using FluentValidation

With FluentValidation, is it possible to validate a string as a parseable DateTime without having to specify a Custom() delegate?

Ideally, I'd like to say something like the EmailAddress function, e.g.:

RuleFor(s => s.EmailAddress).EmailAddress().WithMessage("Invalid email address");

So something like this:

RuleFor(s => s.DepartureDateTime).DateTime().WithMessage("Invalid date/time");