HAPPENIN’ OTSEGO for THURSDAY, AUGUST 27 Glimpse Into The Opera ‘From The Diary Of Sally Hemmings’ GLIMPSE – 5:30 p.m. Enjoy first look at ‘From The Diary of Sally Hemmings’ a dramatic song cycle that imagines the experience of Sally Hemmings, who was the slave of Thomas Jefferson, as told through fictional diary entries. Presented by Glimmerglass Festival. Visit glimmerglass.org/events/glimpse-from-the-diary-of-sally-hemings/ for info. COVID-19 TESTING – 9 a.m. – Noon. Healthy individuals are invited to drive-thru testing for Covid-19, free to Otsego County…