Results for: May 31, 2022Previous Day | Next Day May 31, 2022 May 31 Summer Session I and 10-Week Summer Session Classes Begin All Day TMCC Summer First Session: May 31 through Jul. 1, 2022. May 31 Last Day to Change Degree Emphasis All Day TMCC Last day to change degree emphasis for Summer. May 31 Last Day to Add Summer Classes All Day TMCC Last day to add Summer Session I and 10-Week Summer Session classes. May 31 Last Day for 100% Refund for Summer All Day TMCC Last day for 100% refund for Summer Session I and 10-Week Summer Session. For shorter length classes, refer to refund policy. May 31 COVID-19 Vaccine Clinic 10 a.m. - 2 p.m. RDMT 254, Dandini Campus TMCC to host COVID-19 vaccine clinic with Immunize NV.