WASHINGTON – The sun will do something Tuesday night that it won’t do again in the Washington, D.C. region until March 2025. The sun will set on Tuesday, September 24 at 7:01 p.m. “Not necessarily a Fun Fact: Sunset this evening 7:01 PM,” FOX5’s Tucker Barnes posted to X. “Last sunset after 7PM in DC until March 9th,2025….”