It’s the Twelfth Day of the Twelfth Month of the Twelfth Year of the Twenty First Century of our Common Era.
We created those numbers. We can re-create them again if we wish. We have created many calendar systems throughout our histories. They are just a means we invent to understand the passages of our lives; a system we create so that we can mark what needs to be marked, count what needs to be counted, put dots that help us connect what needs to be connected.