In May’s Uncanny Japan you get three Japanese superstitions and why:
1) Please don’t cut your nails at night.
2) Please don’t whistle at night.
3) Please do kill spiders at night…or don’t, actually you might not want to. There’s a good argument why you should let those night spiders live.
Above is an Edo Era woman cutting her nails with some ginormous nail clippers.