While you are not required to check your schedule, any time off of at least 24 hours becomes a non-fly day, so coming off that 30 hour rest scheduling can give you an assignment starting as early as 10 hours after the end of rest as long as the assignment is made by 12 hours before the start of LC. If such an assignment is made crew scheduling is not required to call to notify you. You must make yourself aware of any such assignment by any means you choose at any time you choose.