Summer Time Begins 2025. There’s more daylight in the evenings and less in the mornings (sometimes called daylight saving time). British summer time (bst) begins when the clocks are set forward, signaling the arrival of longer daylight hours.
The following table shows the dates together with the exact time in which each of the seasons of the year begin. This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox.