Payroll Dates Spring Term January 1 to May 15 May Interim May 16 to May 31 Summer I term June 1 to June 30 Summer II term July 1 to July 31 August Interim August 1 to August 15 Fall term August 16 to December 31 Fall/Spring app August 16 to May 15 AOS 1 st part of term spring January 16 to March 15 AOS 2 nd part of term spring March 16 to May 15 AOS 1 st  part of term fall August 16 to October 15 AOS 2 nd part of term fall October 16 to December 15 AOS summer same as above summer terms Payroll deadlines can be found on Payroll Services website under Payroll Deadlines.