With the invention of the leap year, the Julian calendar was used worldwide for over 1500 years. Over time, it led only to catastrophe.
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Leap day only comes once every four years, including in 2024. But the reason we have it, including when we do and don’t, may surprise you.
On June 20, 2024, the summer solstice occurs at its earliest moment since 1796: when George Washington was President of the USA. Here’s why.
It’s simpler, more compact, and reusable from year-to-year in a way that no other calendar is. Here’s both how it works and how to use it.
A sober look at a wild conspiracy theory that argues the Middle Ages never happened.
The Mayan calendar is revered for its impeccable accuracy. Now, a recent excavation in Guatemala reveals how the system developed over time.
Researchers speculate the famous monument was one of the world’s first solar calendars, possibly inspired by trade with ancient Egyptians.
As the Earth spins and wobbles on its axis and revolves elliptically around the Sun, each day changes from the last. “24 hours” isn’t right.
Even with leap years and long-term planning, our calendar won’t be good forever. Here’s why, and how to fix it.
Your brain is not an obsolete piece of technology. Once properly trained for learning, it’s your ticket to navigating the AI landscape.
The best-laid plans of mice and everyone else.
We bake pies for Pi Day, so why not celebrate other mathematical achievements.
“Uitwaaien” is a popular activity around Amsterdam—one believed to have important psychological benefits.
Perhaps it’s not just an oddly shaped hill, after all.
Schopenhauer and Freud can help teams navigate the most prickly of collaboration problems.
Is mindfulness really the panacea it’s touted to be, or are we glossing over some fundamental flaws?
Leap years will only get us through the next few thousand years before we have to fix it. With every year that passes, we assume that two separate things will both […]
The Reitoff principle gives us permission to “write off” a day and intentionally step away from achieving anything.
They had the technology. So why didn’t they use it?
The Foo Fighters are at the dead center of the map, so all the other bands are happier, sadder, angrier, or hornier.
Unplugging only ignores the hard work of overcoming your distractions.
Traveling back in time is a staple of science fiction movies. But according to Einstein, it’s a physical possibility that’s truly allowed.
An influential series of books argues that the history of the world is the history of generations. Is it right?
From emotional intelligence to problem solving, these management training topics will set team leaders up for success.
Glimpse into the ancient Maya empire through the writing of its own inhabitants.
Most schools use a semester system, but a new study suggests that they should switch to quarters.
Over the past 50 years, 27 leap seconds have been added to our time.
These astounding inventions show that civilizations of the past were a lot more advanced than we might have thought.
The monsoon rains were not always so reliable.
We don’t know what causes Miyake events, but these great surges of energy can help us understand the past — while posing a threat to our future.