Nobody knows for certain when Spring begins. Around this time of year a "green wave" can be observed on successive satellite images moving north at a rate of about 100 miles a week.
For astronomers, Spring begins on 21st March, when the sun crosses the equator on its seasonal journey northwards.
Weather people base it on the weather. Meteorologists consider the 3 coldest months (December, January, February) to be winter. So for them Spring begins on March 1st.
Here, the evenings are light til 6.30, the air is filled with birdsong and I don't need my scarf - Spring!
So beautiful!
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