 And that will be at 1 o'clock on Sunday. Today, the Greenwich Health Department Special Clinical Services Division is holding free HIV testing between 8 a.m. and 3 p.m. Today is National HIV Testing Day. It was first observed in 1995. It's going to be held on the third floor of Town Hall. Call 203-987-1003 if you have any questions. WGCHU Center Time is 835.