6:00 pm - 8:00 pm Watertown Lights and Sirens July 7, 2022 @ 6:00 pm - 8:00 pm Watertown Lights and Sirens Watertown Lights and Sirens will be held on Thursday, July 7th, 2022 from 6:00 pm until 8:00 pm at Riverside Park marking the events’ 21st […] Free