Headlights streak around Portland’s holiday-bedecked Longfellow Square in this long-exposure photo taken on the winter solstice, Sunday, Dec. 21. Sunset was 4:06 p.m. on the shortest day of the year; by Christmas, sunset will occur a few minutes later at 4:09 p.m.   

Christmas lights illuminate Congress Square in Portland in this long-exposure photo taken just after sunset at 4:06 p.m. on the winter solstice, Sunday, Dec. 21, the shortest day of the year. By Christmas, sunset will occur a few minutes later at 4:09 p.m.