The lost days

Huh… weird

Edit: Pope Gregory XIII invented the Gregorian calendar and skipped those days to account for the actual solar year, which is not 365.25, as the Julian calendar said, but rather 365.2422 days.

Yep!
https://www.britannica.com/story/ten-days-that-vanished-the-switch-to-the-gregorian-calendar
This is not some kind of software bug, it actually reflects how the real, western calendar system was intentionally designed.
Don't let modern doomsday cults/prophets know about it though, wouldn't want to further confuse their Bible Math.
Other quirks of our calendar system:
There is no year 0.
https://en.m.wikipedia.org/wiki/Year_zero
Goes straight from 1 BC to 1 AD.
This is why the new millenium actually began in 2001, not 2000.
The Jehovah's Witnesses rather notoriously screwed up their earlier doomsdate due to not realizing this, I'm fairly sure a lot of other sects that popped up in the 1800s did as well.
- Yo some poor programmer had to manually code this in there
- Also, Jesus probably wasn't born in 1AD. as a matter of fact is 1AD the year after Christmas where Jesus was born (so he was born in 1BC) or was Jesus not born for the vast majority of 1AD until a week before the end of year?
  Crazy what assimilating pagan holidays will do to a religion
- Here I was always under the impression that AD was 'after death' in the religious world and BC was 'before christ'. Which would then make the years when the guy was walking around a sort of uncounted void in the timelines I guess.
- Can't believe we skipped both 0 BC and 0 AD.
  In all seriousness, we can define the millennium to start on 2000 and work from there. We already do this with decades and centuries.
Okay if you scroll enough, it goes from year 2 to 1 to 2 and starts getting higher. I went to 1582 again and this seems to be correct
- And no, it does not roll around, it seems to really be BC because my appointments are not listed
If you scroll back to August and September of the same year they don’t show up correctly either. Wonder if October is throwing them off.
- This is the final straw with Apple software bugs
  EVERYONE* impacted by this, you know your duty -> apple.com/feedback
  * yes, even you Bartholomew
This bothers me way more than it really should.
We should pressure them to make a fix for it.
- What's the fix...? o.o

Til Fossify Calendar only goes back to 1900

Literally unusable!

Time travel accident. They didn't realise that the time itself gets travelled into the future. September of 2843 is going to have 42 days.

I was hungry, sorrry.

So that explains the "Months have either 28, 29, 30, or 31 days." in that falsehood list.

I had always wondered that

In 1873 Japan changed from the Chinese Lunar Calendar to the Western Gregorian calendar during the Meiji Restoration, but kept the Chinese Zodiac.

Meaning a Japanese person born at the beginning of the year (between New Year's Day of the Gregorian calendar and New Year's Day of the Chinese Lunar Calendar) will have a different Chinese Zodiac than a Chinese Person.

For example, someone born between January 1st 2025 and January 28th 2025 inclusive would be considered the Year of the Snake in Japan, whereas in the rest of East and Southeast Asia, someone born on those dates would still be the year of the Dragon.

In China and the rest of East and Southeast Asia, the Lunar New Year January 29th 2025 would be the beginning of the year of the snake.

Edit: Living in Japan and dating Japanese people, they really don't like when you tell them this lol.

They were lost due to a rounding error.

Technically correct, but the rounding error was not caused by a modern programmer... it was introduced by Julius Caesar, then patched 1,582 years later by Pope Gregory XIII.
Setting up the evolution of the western calendar system as a github commit / change log seems like a comic xkcd must have already made.
- patched
  lol
The best part is that this really is correct, at the heart of it.

https://www.britannica.com/story/ten-days-that-vanished-the-switch-to-the-gregorian-calendar

The guy responsible for this mess should be stabbed by someone.

I thought this might be a joke about Gregory XIII but no, Greg died of fever so I don't get the comment at all. Doesn't appear to be made by a bot, either.
- Greg fixed the issue introduced by the last guy who deemed himself worthy of creating a calendar for the western world. He tried his best to get us out of the mess.