Inauguration Adds to Fallcoming, Family Weekend Festivities - This year’s combined weekend on Oct. 6-9 will feature the inauguration of David Wippman as the College’s 20th president that Saturday at 10:30 a.m. in the Margaret Bundy Scott Field House.
apostrophes in decades
Use an apostrophe to indicate numerals omitted. Show plural by adding "s": "She attended Hamilton in the '80s." "The 1940s marked a change on college campuses."
SOURCE: Hamilton College Editorial Style Guide