Share to Google Classroom This city of Columbia bicentennial time capsule was sealed December 31, 1986. It is to be opened March 22, 2036, on Columbia’s 250th birthday. Grades: 3 4 5 6 7 8 9 10 11 12 Subject: Social Studies Collection: South Carolina CountiesRichland | SC Counties Series: Let's Go!South Carolina State HouseIV: Grounds: Monuments & Markers