ESA EarthObservation on Twitter
#21December: #SummerSolstice or #WinterSolstice? It depends on which hemisphere you live in: https://t.co/jR6XoiBKWO #LongestDay #ShortestDay pic.twitter.com/1peqYf0jHx — ESA EarthObservation (@ESA_EO) December 21, 2017