Here’s where it gets hilarious: ancient Egyptians didn’t keep calendars like we do. They dated everything by the reign of a pharaoh. So we say “built around 2560 BCE,” but that’s based on astronomy and king lists that are more patchy than your grandma’s quilt.
Carbon dating of organic material found in the mortar puts the Great Pyramid within a 100-year window. That’s like saying your birthday is “sometime in the 1990s.” Close enough, but not great for a party invite.
Scholars argue about the exact date like kids fighting over the last slice of pizza. Some say 2500 BCE, some say 2600 BCE. The truth? It’s so old that even the pyramids have forgotten their own anniversary.
Fun Fact: The Pyramids Were Once White and Shiny
Imagine the Great Pyramid looking like a gigantic diamond covered in polished white limestone. That’s what it looked like for thousands of years. The outer casing stones were so smooth they reflected the desert sun like a mirror.
Then, along came medieval Cairo, which needed building material. They peeled off those stones like they were peeling an orange. Now we have a dusty beige pyramid that tourists still love, but it used to look like a sugary confection.
There’s still a bit of that casing left at the top. If you squint, you can imagine how it blinded pharaohs and pigeons alike. Harvesting limestone for your house? Bold move, Cairo.
Demystifying the Egyptian Pyramids with Hard Facts | Ancient Origins