Weird but true history: Why the calendar skipped from October 4th to the 15th in 1582
Those 10 days simply don't exist…sort of.

The switch to the Gregorian calendar messed up our measurement of time for a bit there.
If you think crossing time zones and navigating Daylight Savings Time can be confusing, imagine losing or gaining multiple days just by crossing a border.
That was life for Europeans in the late 16th century after 10 days were eliminated from the Gregorian calendar. In 1582, if you lived in a Catholic country, the calendar went from October 4 to October 15—the dates in between just didn't exist. As a result, you could find yourself going back or forward in time simply by entering or exiting a non-Catholic country.
What happened to the missing 10 days in October of 1582?
The mystery of the missing days isn't so much a mystery as a miscalculation. For nearly 1,600 years, the Julian calendar had been used by people across Europe, and on the surface it wasn't a whole lot different than the Gregorian calendar we use today—365 days in a year with a leap year every 4 years and the spring equinox being placed on March 21.
But there was one problem: It was off on how long a solar year is by 11 minutes and 14 seconds.
That may not seem like much, but after over 1,000 years, it added up. Placing a leap year every four years without exception meant that the equinox was slowly pushed back on the calendar. By the mid-1500s, the equinox fell on March 11 instead of March 21. As a result, the calculations for Easter were thrown off.
How the Gregorian calendar recalibrated the spring equinox
After years of consultations among church leaders about how to fix the problem, Pope Gregory XIII signed an edict implementing a new calendar system—the Gregorian calendar we use today—in February of 1582. As part of the implementation, 10 days were removed from October during weeks that wouldn't affect any of the Christian holidays to get the equinox back to March 21.
But losing those days wasn't seamless. For one, since the change came from the pope, non-Catholic countries weren't too keen on taking up the new calendar. Austria, Spain, Portugal, Italy, Poland, and the Catholic states of Germany switched to the Gregorian calendar, but Protestant and Orthodox countries of Europe resisted. They all came around eventually, but it took more than 100 years for the British Empire to jump on board, and some countries, including Russia, Turkey, Greece, Albania, Lithuania, and Estonia, didn't make the switch until the 20th century.
In the meantime, the removal of October 5 to 14 meant that dates were different in different countries—and in some cases even within the same country. Germany was split by Catholic and Protestant regions, so the two different calendars made travel between those regions really weird date-wise. (Imagine trying to navigate that kind of chaos in today's global neighborhood. Good thing they didn't have airplanes then.)
Leap year calculations in the Gregorian calendar are a little more complicated
Now, one might ask, "If the Julian calendar had a leap year every four years, didn't that account for the length of time in a solar year? How is that different than the leap years we have in the Gregorian calendar?"
The answer is that the way leap years work in the Gregorian calendar is a bit more complex than many of us realize. Most of us were taught that we have a leap year every four years, which is generally true, but with some regularly scheduled exceptions. We don't hear about these exceptions because they happen so infrequently and won't happen within our lifetime, but they make all the difference mathematically.
In the Gregorian calendar, we add a day to the calendar (February 29th) every four years except on years that can be divided by 100, which are not leap years, unless the year can also be divided by 400, in which case it is a leap year. That might sound confusing, but essentially, 1700, 1800, 1900 were not leap years, but 2000 was. The years 2100, 2200 and 2300 will not be leap years, but 2400 will be.
Removing those leap years every 100 years but not every 400 years accounts for the miscalculation in the Julian calendar, just as removing the 10 days from October of 1582 fixed the drift that had occured over millennia because of it. There are still different calendars used in different places for different purposes, but the Gregorian calendar has gradually become the international standard for dates and times.
Time may be a construct, but humans have managed to construct quite a detailed system of measuring it, even with some quirky bumps along the way.
There's a reason why some people can perfectly copy accents, and others can't
Turns out, there's a neurodivergent link.
A woman in black long sleeve shirt stands in front of mirror.
Have you ever had that friend who goes on vacation for four days to London and comes back with a full-on Queen's English posh accent? "Oooh I left my brolly in the loo," they say, and you respond, "But you're from Colorado!" Well, there are reasons they (and many of us) do that, and usually it's on a pretty subconscious level.
It's called "accent mirroring," and it's actually quite common with people who are neurodivergent, particularly those with ADHD (Attention Deficit Hyperactivity Disorder). According Neurolaunch, the self-described "Free Mental Health Library," "Accent mirroring, also known as accent adaptation or phonetic convergence, is the tendency to unconsciously adopt the accent or speech patterns of those around us. This linguistic chameleon effect is not unique to individuals with ADHD, but it appears to be more pronounced and frequent in this population."
Essentially, when people have conversations, we're constantly "scanning" for information—not just the words we're absorbing, but the inflection and tone. "When we hear an accent, our brains automatically analyze and categorize the phonetic features, prosody, and intonation patterns," writes Neurolaunch. For most, this does result in copying the accent of the person with whom we're speaking. But those with ADHD might be more sensitive to auditory cues. This, "coupled with a reduced ability to filter out or inhibit the impulse to mimic…could potentially explain the increased tendency for accent mirroring."
While the article explains further research is needed, they distinctly state that, "Accent mirroring in individuals with ADHD often manifests as an unconscious mimicry of accents in social situations. This can range from subtle shifts in pronunciation to more noticeable changes in intonation and speech rhythm. For example, a person with ADHD might find themselves unconsciously adopting a Southern drawl when conversing with someone from Texas, even if they’ve never lived in the South themselves."
People are having their say online. On the subreddit r/ADHDWomen, a thread began: "Taking on accents is an ADHD thing?" The OP shares, "My whole life, I've picked up accents. I, myself, never noticed, but everyone around me would be like, 'Why are you talking like that??' It could be after I watched a show or movie with an accent or after I've traveled somewhere with a different accent than my 'normal.'
They continue, "Apparently, I pick it up fast, but it fades out slowly. Today... I'm scrolling Instagram, I watch a reel from a comedian couple (Darcy and Jeremy. IYKYK) about how Darcy (ADHD) picks up accents everywhere they go. It's called ADHD Mirroring??? And it's another way of masking."
(The OP is referring to Darcy Michaels and his husband Jeremy Baer, who are both touring comedians based in Canada.)
Hundreds of people on the Reddit thread alone seem to relate. One comments, "Omfg I've done this my whole life; I'll even pick up on the pauses/spaces when I'm talking to someone who is ESL—but English is my first language lol."
Sometimes, it can be a real issue for those around the chameleon. "I accidentally mimicked a waitress's weird laugh one time. As soon as she was out of earshot, my family started to reprimand me, but I was already like 'oh my god I don’t know why I did that, I feel so bad.'"
Many commenters on TikTok were shocked to find out this can be a sign of ADHD. One jokes, "Omg, yes, at a store the cashier was talking to me and she was French. She's like 'Oh are you French too? No, I'm not lol. I'm very east coast Canada."
And some people just embrace it and make it work for them. "I mirror their words or phrase! I’m 30. I realized I start calling everyone sweetie cause my manager does & I work at coffee shop."