May 29, 2023 12:00 a.m. to 3:00 a.m. (PDT) is 4 p.m. JST and 9 a.m. CEST.

29 May is Whit Monday across most of Europe. Next year it falls on 20 May. In 2025 it falls on 9 June. For those of us who live in North America, it is totally unrelated to Memorial Day in the United States.

I can understand your dissappointment.

But I have to ask if you'd really rather spend the entirety of your holiday under threat of this condition: "This maintenance will address an issue which causes servers to crash under certain conditions." instead of getting up late and starting to play at noon?