COVID-19 vaccination clinics continue in Billings on May 12 and 13 MTN News graphic and last updated 2021-05-05 16:14:53-04 (RiverStone Health Press Release) BILLINGS - Walk-ins are welcome at fast, free COVID-19 vaccination clinics on Wednesday, May 12, and Thursday, May 13, at the Shrine Auditorium, 1125 Broadwater Ave. First dose COVID-19 clinic hours are: · Wednesday, May 12 8 a.m. till noon AND 1-5 p.m. · Thursday, May 13 10 a.m. to 2 p.m. AND 3-7 p.m. Second dose COVID-19 clinic hours are: · Monday, May, 10 7 â 11 a.m. AND noon â 4 p.m. · Tuesday, May, 11 7 â 11 a.m. AND noon â 4 p.m. For those wanting to schedule an appointment, first dose COVID-19 appointments are available by phoning 406.651.6596 between 9 a.m. Thursday, May 6, and 5 p.m. Friday, May 7. Appointments arenât available online.