The days have been getting longer since 22 December, reaching their crescendo today, the longest day of the year in the Northern Hemisphere. If you're south of the Equator, however, it's the shortest day of the year.
Winter Solstice: Today Is the Shortest Day of the Year!
21 June is the first day of winter in the Southern Hemisphere and the first day of summer in the Northern Hemisphere.It is the shortest (or longest) days of the year, and they will get progressively longer (or shorter).