To my #gentile friends who have trouble understanding that #Jewish holidays start the night before:
Think of it like Trash Day. It really begins at sundown the night before, when it is time to drag the cans to the curb, and it ends at sundown the next day, by which time you need to have dragged them back. The night before Trash Day, or "Erev Trash Day", as it is known in our house, is really the most important part of the observance of Trash Day.
Happy Trash Day to all who celebrate!