Traffic jam today

It’s usually jam yesterday and jam tomorrow...

"I'm sure I'll take you with pleasure!" the Queen said. "Two pence a week, and jam every other day." Alice couldn't help laughing, as she said, "I don't want you to hire me – and I don't care for jam." "It's very good jam," said the Queen. "Well, I don't want any to-day, at any rate." "You couldn't have it if you did want it," the Queen said. "The rule is, jam to-morrow and jam yesterday – but never jam to-day."
"It must come sometimes to 'jam to-day'," Alice objected. "No, it can't," said the Queen. "It's jam every other day: to-day isn't any other day, you know." "I don't understand you," said Alice. "It's dreadfully confusing!"