The 2018 spring equinox has arrived — here's what it is and how it works

The 2018 spring equinox has arrived — here's what it is and how it works  Business Insider The spring equinox is Tuesday: 6 things to know about the first day of spring  Vox Spring arrives Tuesday, just hours ahead of another snow storm for Anne Arundel  CapitalGazette.com (blog) Vernal Equinox 2018: Facts About the First Day of Spring  National GeographicFull coverage