What are some significant numbers or juxtapositions of numbers and quantities you often notices?

You may find it delightful to encounter sequences composed of prime numbers, or numbers who are divisors of each other. Maybe they're components of your first phone number, your first car license, your kid's birthday, the day a relative died, or the release of Star Trek II: The Wrath of Khan. What numbers and combinations of numbers you see everywhere that you find curious, amusing, or meaningful?