Here’s when the first days of spring are, why there’s a different first day for meteorological and astronomical seasons and ...

Astronomical seasons are based on the movement of the sun and can differ by a day or two in ... Wait, it's not spring yet, is it? It is if you're a scientist. March 1 marks the beginning of ...

Meteorological spring began on March 1, while astronomical spring starts on the vernal equinox. The vernal equinox marks the astronomical first day of spring and falls on Thursday, March 20 ...

The spring equinox - also known as vernal equinox - marks the first day of spring in the northern hemisphere, according to ...

According to meteorological seasons, or seasons divided by weather scientists according to temperature cycles, the first day of spring is always March 1, and the last is May 31. Meteorological ...