I had a blood moon happen in hardmode (which was pretty easy, thanks to my yellow phasesaber, and my hel-fire, which i got pretty early on in hardmode), then a random pirate invasion directly afterwards, which i was not at all prepared for, as it was my first one. Ended up going into the night before i beat them (would have taken less time possibly, if my dryad didn't die shortly after it started). The rest of the night and the next morning were spent cleaning up the mess, and making modifications to my moat due to the fact that some of them could jump over it, and they could jump back out on the opposite side. then that night the twins were about to randomly spawn, so I threw myself down my hellevator for the night as i only have mythril armor (i forgot my spelunker potions as well, so i couldn't go titanium hunting), and then the following morning the pirates decide to invade again. Went a lot smoother this time, as i had a strategy locked down. got 98% of the way through the event, and the twins come looking for me again. pirates were defeated as i fell down my hellevator, though.