Memorial Day Observed Written by Tri State Disposal. Posted in Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: May 29, 2017 all-day Repeats 2017-05-29T00:00:00-05:002017-05-30T00:00:00-05:00Contact: Tri-State Disposal 708-388-9910Memorial Day Observed