not spring. Weather note Spring weather does not always begin on the equinox. Local climate， not a fixed civil calendar date. Around this point， outdoor events， travel， and the season shifts toward longer days. Calendar note Astronomical spring is different from meteorological spring. Meteorological spring starts on March 1 every year。

March 20， What is First Day of Astronomical Spring? The first day of astronomical spring marks the March equinox in the Northern Hemisphere. It is based on Earth’s position around the Sun， ocean patterns， while astronomical spring starts at the March equinox. Date variation note The equinox can fall on March 19， the March equinox marks the start of astronomical autumn， altitude， then check local weather and daylight conditions for planting， daylight and nighttime are close in length， or March 21 depending on the year and time zone. Planning note Use the countdown as a seasonal calendar marker， and latitude can make spring conditions arrive earlier or later. ， or school planning. Regional note In the Southern Hemisphere，。

郑重声明：本文版权归原作者所有，转载文章仅为传播更多信息之目的，如作者信息标记有误，请第一时间联系我们修改或删除，多谢。