Happy Devil's/Cabbage/Tick-Tack/Mischief/Corn/Goosy Night / Trick/ Gate/ Beggars Night!

https://en.wikipedia.org/wiki/Devil%27s_Night#:~:text=Devil's%20Night%20is%20a%20name,30%2C%20the%20night%20before%20Halloween. 

https://en.wikipedia.org/wiki/Mischief_Night

https://gizmodo.com/whats-the-night-before-halloween-called-it-depends-on-1652219297