![]() ![]() Meteorological seasons consist of splitting the seasons into four periods made up of three months each. By the meteorological calendar, the first day of winter is always 1 December ending on 28 (or 29 during a Leap Year) February. However, at the Met Office, we often use a meteorological definition of the seasons. However, the dates of the Equinox and Solstice aren't fixed due to the Earth's elliptical orbit of the Sun. Both Equinoxes and Solstices are related to the Earth's orbit around the Sun. ![]() The astronomical calendar determines the seasons due to the 23.5 degrees of tilt of the Earth's rotational axis in relation to its orbit around the Sun. This year, astronomical winter begins on 21 December 2022 and ends on 20 March 2023.įor upcoming years, the dates for astronomical winter will be: Year The day in our calendar that marks the first day of winter usually refers to the astronomical seasons which are a result of the Earth's axis and orbit around the Sun. ![]()
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