https://veteran.com/national-moment-remembrance/
Americans observe the National Moment of Remembrance at 3 p.m. every Memorial Day (the last Monday in May). It is intended to help Americans spend a brief, but significant time remembering the sacrifices of those who died as a result of military service.
At 3 p.m. local time on the last Monday in May, Americans are asked to stop for 60 seconds or one full minute to remember those who have died in service to their country.
While participation is voluntary, the VA fact sheet suggests a variety of ways in which you can observe the moment. These include pausing for a simple moment of silence. listening to “Taps” or attending an organized group setting. If you are driving a vehicle, the VA suggests turning on your headlights in observance of the moment.