Just started a fresh world and have my config setup for hordes to occur every 50 days, with a 20 day variance.
`#Amount of days between horde spawns
hordeSpawnDays = 50

#Amount of days a horde event can be randomly extended by
hordeSpawnVariation = 20`

However its only day 8 and I just got the can't sleep, the horde is approaching notice.

So looking it over, I think it was my mistake. I forgot that I had to delete the world after running the server the first time and making the config changes to make sure the new nextDay would be 50-70 days instead of the default 8.