Results for: May 31, 2022Previous Day | Next Day May 31, 2022 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 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 COVID-19 Vaccine Clinic 10 a.m. - 2 p.m. RDMT 254, Dandini Campus TMCC to host COVID-19 vaccine clinic with Immunize NV.