november, 2019 28novAll Day29Thanksgiving Staff Holiday Event DetailsSociety and NIOSA offices will be closed for the holidays Thursday, November 28th and Friday, November 29th Have a safe and happy Thanksgiving. Event Details Society and NIOSA offices will be closed for the holidays Thursday, November 28th and Friday, November 29th Have a safe and happy Thanksgiving. more Timenovember 28 (Thursday) - 29 (Friday) CST CalendarGoogleCal