WASHINGTON — The winter solstice is Saturday, bringing the shortest day and longest night of the year to the NorthernHemisphere — ideal conditions for holiday lights and warm blankets.
The NorthernHemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.