When Is The First Day Of Summer 2025 Uk Time. 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 is the longest day of the year and marks the start of summer in the northern hemisphere.


When Is The First Day Of Summer 2025 Uk Time

When is the first day of summer? When is the first day of summer 2025?

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