Categories Mason Family Flash Important dates for January Post author By Rebecca McCrory Post date December 26, 2017 January 2-21Winter Break January 15Martin Luther King, Jr. Day (no classes) January 19All on-campus residence halls reopen at 10 a.m. January 22First day of Spring classes January 29Last day to add classes (no tuition penalty) ← Congratulations, Class of 2017! → Save the date for Sibs & Kids Weekend 2018!