How long is the st patties day event?

The night it started I found 3 all out in the woods in random places above Brit, out in yew woods and over near destard woods. Pretty sure I'm an idiot and was only looking for holiday coins not realizing the cloaks and stuff are worth money =\... trial and error lol haven't seen any since though

I also didn't use any tracking cause, I didn't even know you could lol. So pure luck? One happened to be like 10 steps from my house