Although no longer in the EU, UK is still adopting the EU Directive for ’Summer Time’.
The 2002 Directive stated that Daylight Saving Time (DST) would be
observed between 0100 UTC on the last Sundays in March and October. So,
this year clocks in UK revert to British Summer Time (BST) on 27 March
until 30 October.
Frustrations with DST clock changes had led the European Parliament to draft a law for the
removal of DST. This was initially planned for 2021, but it did not happen as Europe was busy handling health and economic effects of Covid-19.
Meteorological
Summer runs for 3 months from 1 June, with Astronomical Summer starting
at the Summer Solstice, this year at 1013 UTC on 21 June.
Image from the EU and further details from timeanddate
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