When Does Spring Start 2024 Uk. This year, the spring equinox falls on wednesday 20 march, and the astronomical spring lasts until the summer solstice. There is a deadline of 1 june for completions (unless the exchange took place on or before 6 march).
When spring starts depends on whether you are counting the first day of meteorological spring or astronomical spring. The clocks change on the last sunday of march every year in the uk, moving forward by one hour.