Boris Johnson wrote about this on Twitter.
“Russia’s barbaric and illegal invasion of Ukraine has led to millions of Ukrainians losing electricity, water and vital supplies. I am supporting the #hourforukraine tonight at 8pm in solidarity with them. Victory to Ukraine!” he tweeted.
For reference. #hourforukraine - a flash mob announced as a sign of support for Ukraine, which is suffering from blackouts due to Russian strikes.
On Wednesday, December 21, many countries will hold an action in support of Ukraine. At 8 pm local time, everyone who stands in solidarity with Ukraine in this terrible Russian war will turn off the festive Christmas illumination for a while.
December 21 is the shortest day with the longest night.
Also, on December 21, Vilnius, Kaunas, Vilkaviškis and other municipalities of Lithuania will take part in the Hour for Ukraine action, during which they will turn off the festive lighting in show of solidarity.